Transphorm Technology, Inc.

United States of America

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H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds 67
H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT 66
H01L 29/66 - Types of semiconductor device 61
H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched 32
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1.

INTEGRATED DESIGN FOR III-NITRIDE DEVICES

      
Application Number 19207125
Status Pending
Filing Date 2025-05-13
First Publication Date 2025-08-28
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Wu, Yifeng
  • Gritters, John Kirk

Abstract

A semiconductor device comprises a III-N device and a Field Effect Transistor (FET). The III-N device comprises a substrate on a first side of a III-N material structure, a first gate, a first source, and a first drain on a side of the III-N material structure opposite the substrate. The FET comprises a second semiconductor material structure, a second gate, a second source, and a second drain, and the second source being on an opposite side of the second semiconductor material structure from the second drain. The second drain of the FET is directly contacting and electrically connected to the first source of the III-N devices, and a via-hole is formed through a portion of the III-N material structure exposing a portion of the top surface of the substrate and the first gate is electrically connected to the substrate through the via-hole.

IPC Classes  ?

  • H10D 30/47 - FETs having zero-dimensional [0D], one-dimensional [1D] or two-dimensional [2D] charge carrier gas channels having 2D charge carrier gas channels, e.g. nanoribbon FETs or high electron mobility transistors [HEMT]
  • H01L 23/48 - Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads or terminal arrangements
  • H10D 62/85 - Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group III-V materials, e.g. GaAs

2.

CASCODE NORMALLY OFF SWITCH WITH DRIVER AND SELF BIAS

      
Application Number 18853241
Status Pending
Filing Date 2023-03-15
First Publication Date 2025-08-07
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Dhayagude, Tushar H.
  • Pruett, Henry Frazier

Abstract

An electronic component comprises a semiconductor devices package. The semiconductor device package includes a conductive structural package base, a first terminal configured to be connected to an inductive load, and a second terminal configured to be connected to a common node or circuit ground. The package further comprises an enhancement-mode transistor and a depletion-mode III-N transistor in a cascode configuration. The enhancement-mode transistor is monolithically integrated with an IC controller and a gate driver on a common silicon substrate, where an anode of a rectifying diode is connected to the drain of the enhancement-mode transistor and a cathode of the rectifying diode is connected to a voltage input terminal of the IC controller, and a reservoir capacitor has a first terminal connected to the cathode of the rectifying diode and a second terminal connected to the conductive structural package base.

IPC Classes  ?

  • H02M 1/36 - Means for starting or stopping converters
  • H02M 1/00 - Details of apparatus for conversion
  • H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices

3.

LATERAL III-NITRIDE DEVICES INCLUDING A VERTICAL GATE MODULE

      
Application Number 19083336
Status Pending
Filing Date 2025-03-18
First Publication Date 2025-07-03
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Mishra, Umesh
  • Bisi, Davide
  • Gupta, Geetak
  • Neufeld, Carl Joseph
  • Swenson, Brian L.
  • Lal, Rakesh K.

Abstract

A lateral III-N device has a vertical gate module with III-N material orientated in an N-polar or a group-III polar orientation. A III-N material structure has a III-N buffer layer, a III-N barrier layer, and a III-N channel layer. A compositional difference between the III-N barrier layer and the III-N channel layer causes a 2DEG channel to be induced in the III-N channel layer. A p-type III-N body layer is disposed over the III-N channel layer in a source side access region but not over a drain side access region. A n-type III-N capping layer over the p-type III-N body layer. A source electrode that contacts the n-type III-N capping layer is electrically connected to the p-type III-N body layer and is electrically isolated from the 2DEG channel when the gate electrode is biased relative to the source electrode at a voltage that is below a threshold voltage.

IPC Classes  ?

  • H10D 30/47 - FETs having zero-dimensional [0D], one-dimensional [1D] or two-dimensional [2D] charge carrier gas channels having 2D charge carrier gas channels, e.g. nanoribbon FETs or high electron mobility transistors [HEMT]
  • H10D 30/01 - Manufacture or treatment
  • H10D 62/10 - Shapes, relative sizes or dispositions of the regions of the semiconductor bodiesShapes of the semiconductor bodies
  • H10D 62/17 - Semiconductor regions connected to electrodes not carrying current to be rectified, amplified or switched, e.g. channel regions
  • H10D 62/824 - Heterojunctions comprising only Group III-V materials heterojunctions, e.g. GaN/AlGaN heterojunctions
  • H10D 62/85 - Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group III-V materials, e.g. GaAs

4.

HIGH VOLTAGE III-N DEVICES AND STRUCTURES WITH REDUCED CURRENT DEGRADATION

      
Application Number 19038190
Status Pending
Filing Date 2025-01-27
First Publication Date 2025-06-05
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Bisi, Davide
  • Gupta, Geetak
  • Wienecke, Steven
  • Swenson, Brian
  • Rhodes, David Michael
  • Mishra, Umesh
  • Hwang, Robin Christine

Abstract

Lateral III-N devices such as AlGaN/GaN HEMTs can have structures which serve to improve performance and reduce current degradation. The III-N device can include a conductive substrate and a III-N material structure that includes a III-N buffer layer, a III-N channel layer and a III-N barrier layer where a compositional difference induces a 2DEG channel therein. The first portion is in ohmic contact with the 2DEG channel and the second portion extends over a top surface of the III-N barrier layer and is in direct contact with the top surface of the III-N barrier layer. The device further includes a drain-to-substrate pinch-off voltage and a maximum rated drain-to-source operating voltage which is greater than the drain-to-substrate pinch-off voltage, and the 2DEG channel is fully depleted of charge below the second portion of the drain electrode when the III-N device is biased at or above the maximum rated drain-to-source operating voltage.

IPC Classes  ?

  • H10D 30/47 - FETs having zero-dimensional [0D], one-dimensional [1D] or two-dimensional [2D] charge carrier gas channels having 2D charge carrier gas channels, e.g. nanoribbon FETs or high electron mobility transistors [HEMT]
  • G01R 31/26 - Testing of individual semiconductor devices
  • H10D 62/85 - Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group III-V materials, e.g. GaAs
  • H10D 64/00 - Electrodes of devices having potential barriers
  • H10D 64/23 - Electrodes carrying the current to be rectified, amplified, oscillated or switched, e.g. sources, drains, anodes or cathodes
  • H10D 64/27 - Electrodes not carrying the current to be rectified, amplified, oscillated or switched, e.g. gates

5.

N-POLAR DEVICES INCLUDING A DEPLETING LAYER WITH IMPROVED CONDUCTIVITY

      
Application Number 18833814
Status Pending
Filing Date 2023-01-20
First Publication Date 2025-03-27
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Gupta, Geetak
  • Mishra, Umesh
  • Bisi, Davide
  • Lal, Rakesh K.
  • Rhodes, David Michael

Abstract

Described herein are lateral III-N (e.g., GaN) devices having a III-N depleting layer. A circuit includes a depletion-mode transistor with a source connected to a drain of an enhancement-mode transistor. The gate of the depletion-mode transistor and the gate of the enhancement-mode transistor are biased at zero volts, and the drain of the depletion-mode transistor is biased at positive voltage to block a current in a forward direction. Then, the bias of the gate of the enhancement-mode transistor is changed to a first voltage greater than the threshold voltage of the enhancement-mode transistor and a first current is allowed to flow through the channel in a forward direction. Then, the bias of the gate of the depletion-mode transistor is changed to a second voltage and a second current is allowed to flow through the channel in a forward direction where the second current is greater than the first current.

IPC Classes  ?

  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/40 - Electrodes
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors

6.

MODULE ASSEMBLY OF MULTIPLE SEMICONDUCTOR DEVICES WITH INSULATING SUBSTRATES

      
Application Number 18719758
Status Pending
Filing Date 2022-12-21
First Publication Date 2024-12-19
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Bisi, Davide
  • Gupta, Geetak
  • Hosoda, Tsutomu
  • Mishra, Umesh

Abstract

An electronic component comprising and electronic component package including a high thermally conductive package base. The component further includes a first lateral III-N device including a first insulating substrate, the first lateral III-N device comprising a first side and a second side, where a first III-N material structure is on the first side of the first lateral III-N device. A second lateral III-N device including a second insulating substrate, the second lateral III-N device comprising a first side and a second side, where a second III-N material structure is on a first side of the second lateral III-N device. The second side of the first lateral III-N device is directly mounted and physically attached to the thermally conductive package base and the second side of the second lateral III-N device is directly mounted and physically attached to the thermally conductive package base.

IPC Classes  ?

  • H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different subclasses of , , , , or , e.g. forming hybrid circuits
  • H01L 23/00 - Details of semiconductor or other solid state devices
  • H01L 23/04 - ContainersSeals characterised by the shape
  • H01L 23/373 - Cooling facilitated by selection of materials for the device
  • H01L 23/538 - Arrangements for conducting electric current within the device in operation from one component to another the interconnection structure between a plurality of semiconductor chips being formed on, or in, insulating substrates
  • H01L 27/12 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate

7.

CONFIGURATIONS FOR FOUR QUADRANT III-NITRIDE SWITCHES

      
Application Number US2024011458
Publication Number 2024/167620
Status In Force
Filing Date 2024-01-12
Publication Date 2024-08-15
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Neufeld, Carl Joseph
  • Rhodes, David Michael
  • Bisi, Davide
  • Gupta, Geetak
  • Lal, Rakesh K.

Abstract

An electronic component comprises semiconductor devices including a four-quadrant switch (FQS), a first enhancement-mode transistor, and a second enhancement-mode transistor. The FQS is a depletion-mode III-N device including a first power electrode, a second power electrode, and a second gate. The FQS further comprises a III-N material structure, where a compositional difference in the III-N material structure forms a 2DEG channel therein, and a first internal resistor formed of a first portion of the 2DEG channel, and a second internal resistor formed of a second portion of the 2DEG channel. A first drain of the first enhancement-mode transistor is electrically connected and physically mounted to the first power electrode, and a second drain of the second enhancement-mode transistor is electrically connected and physically mounted to the second power electrode.

IPC Classes  ?

  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 21/82 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
  • H01L 23/52 - Arrangements for conducting electric current within the device in operation from one component to another
  • H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate

8.

HIGH VOLTAGE III-N DEVICES AND STRUCTURES WITH REDUCED CURRENT DEGRADATION

      
Application Number US2023070891
Publication Number 2024/026279
Status In Force
Filing Date 2023-07-25
Publication Date 2024-02-01
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Bisi, Davide
  • Gupta, Geetak
  • Wienecke, Steven
  • Swenson, Brian L.
  • Rhodes, David Michael
  • Mishra, Umesh
  • Hwang, Robin Christine

Abstract

Lateral III-N devices such as AlGaN/GaN HEMTs can have structures which serve to improve performance and reduce current degradation. The III-N device can include a conductive substrate and a III-N material structure that includes a III-N buffer layer, a III-N channel layer and a III-N barrier layer where a compositional difference induces a 2DEG channel therein. The first portion is in ohmic contact with the 2DEG channel and the second portion extends over a top surface of the III-N barrier layer and is in direct contact with the top surface of the III-N barrier layer. The device further includes a drain-to-substrate pinch-off voltage and a maximum rated drain-to-source operating voltage which is greater than the drain-to-substrate pinch-off voltage, and the 2DEG channel is fully depleted of charge below the second portion of the drain electrode when the III-N device is biased at or above the maximum rated drain-to-source operating voltage.

IPC Classes  ?

  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 23/48 - Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads or terminal arrangements

9.

Integrated design for III-Nitride devices

      
Application Number 18471263
Grant Number 12324180
Status In Force
Filing Date 2023-09-20
First Publication Date 2024-01-11
Grant Date 2025-06-03
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Wu, Yifeng
  • Gritters, John Kirk

Abstract

A semiconductor device comprises a III-N device and a Field Effect Transistor (FET). The III-N device comprises a substrate on a first side of a III-N material structure, a first gate, a first source, and a first drain on a side of the III-N material structure opposite the substrate. The FET comprises a second semiconductor material structure, a second gate, a second source, and a second drain, and the second source being on an opposite side of the second semiconductor material structure from the second drain. The second drain of the FET is directly contacting and electrically connected to the first source of the III-N devices, and a via-hole is formed through a portion of the III-N material structure exposing a portion of the top surface of the substrate and the first gate is electrically connected to the substrate through the via-hole.

IPC Classes  ?

  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 23/48 - Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads or terminal arrangements
  • H10D 30/47 - FETs having zero-dimensional [0D], one-dimensional [1D] or two-dimensional [2D] charge carrier gas channels having 2D charge carrier gas channels, e.g. nanoribbon FETs or high electron mobility transistors [HEMT]
  • H10D 62/85 - Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group III-V materials, e.g. GaAs

10.

CASCODE NORMALLY OFF SWITCH WITH DRIVER AND SELF BIAS

      
Application Number US2023064447
Publication Number 2023/215657
Status In Force
Filing Date 2023-03-15
Publication Date 2023-11-09
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Dhayagude, Tushar H.
  • Pruett, Henry Frazier

Abstract

An electronic component comprises a semiconductor devices package. The semiconductor device package includes a conductive structural package base, a first terminal configured to be connected to an inductive load, and a second terminal configured to be connected to a common node or circuit ground. The package further comprises an enhancement-mode transistor and a depletion-mode III-N transistor in a cascode configuration. The enhancement-mode transistor is monolithically integrated with an IC controller and a gate driver on a common silicon substrate, where an anode of a rectifying diode is connected to the drain of the enhancement-mode transistor and a cathode of the rectifying diode is connected to a voltage input terminal of the IC controller, and a reservoir capacitor has a first terminal connected to the cathode of the rectifying diode and a second terminal connected to the conductive structural package base.

IPC Classes  ?

  • H02M 3/155 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 3/156 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
  • H02M 3/157 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control
  • H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
  • H02M 3/10 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
  • H02M 3/135 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
  • H02M 3/137 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
  • H02M 3/139 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control
  • H02M 3/142 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load

11.

III-NITRIDE DEVICES WITH THROUGH-VIA STRUCTURES

      
Application Number 18027432
Status Pending
Filing Date 2021-09-17
First Publication Date 2023-10-19
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Gupta, Geetak
  • Mishra, Umesh
  • Bisi, Davide
  • Rhodes, David Michael
  • Lal, Rakesh K.
  • Neufeld, Carl Joseph

Abstract

A semiconductor device comprises a III-N device including an insulating substrate. The insulating substrate includes a first side and a second side. The device further includes a III-N material structure on a first side of the insulating substrate, and a gate electrode, a source electrode, and a drain electrode on a side of the III-N material structure opposite the substrate. A backmetal layer on the second side of the insulating substrate, and a via hole is formed through the III-N material structure and the insulating substrate. A metal formed in the via-hole is electrically connected to the drain electrode on the first side of the substrate and electrically connected to the backmetal layer on the second side of the substrate.

IPC Classes  ?

  • H01L 23/48 - Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads or terminal arrangements
  • H01L 27/095 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being Schottky barrier gate field-effect transistors
  • H01L 23/528 - Layout of the interconnection structure
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 21/768 - Applying interconnections to be used for carrying current between separate components within a device
  • H01L 21/8252 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using III-V technology
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/40 - Electrodes

12.

Module configurations for integrated III-nitride devices

      
Application Number 18325829
Grant Number 12074150
Status In Force
Filing Date 2023-05-30
First Publication Date 2023-09-28
Grant Date 2024-08-27
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Rhodes, David Michael
  • Wu, Yifeng
  • Yea, Sung Hae
  • Parikh, Primit

Abstract

An electronic module for a half-bridge circuit includes a base substrate with an insulating layer between a first metal layer and a second metal layer. A trench formed through the first metal layer electrically isolates first, second, and third portions of the first metal layer from one another. A high-side switch includes an enhancement-mode transistor and a depletion-mode transistor. The depletion-mode transistor includes a III-N material structure on an electrically conductive substrate. A drain electrode of the depletion-mode transistor is connected to the first portion, a source electrode of the enhancement-mode transistor is connected to the second portion, a drain electrode of the enhancement-mode transistor is connected to a source electrode of the depletion-mode transistor, a gate electrode of the depletion-mode transistor is connected to the electrically conductive substrate, and the electrically conductive substrate is connected to the second portion.

IPC Classes  ?

  • H01L 25/00 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices
  • H01L 23/14 - Mountings, e.g. non-detachable insulating substrates characterised by the material or its electrical properties
  • H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
  • H01L 23/373 - Cooling facilitated by selection of materials for the device
  • H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different subclasses of , , , , or , e.g. forming hybrid circuits
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors

13.

III-NITRIDE DEVICES INCLUDING A DEPLETING LAYER

      
Application Number 18019742
Status Pending
Filing Date 2021-07-23
First Publication Date 2023-09-21
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Bisi, Davide
  • Gupta, Geetak
  • Mishra, Umesh
  • Lal, Rakesh K.

Abstract

Described herein are lateral III-N (e.g. GaN) devices having a III-N depleting layer, for which the III-N material is formed in an N-polar orientation. The III-N device includes a III-N layer structure comprising a III-N channel layer between a III-N barrier layer and a p-type III-N depleting layer. The III-N channel layer includes a 2DEG channel formed therein. The III-N device includes a source electrode and a drain electrode, each of which being electrically connected to the 2DEG channel, and a gate electrode between the source and the drain electrodes, the gate being over the III-N layer structure. The p-type III-N depleting layer includes a first portion that is between the gate and the drain electrode and the p-type III-N depleting layer is electrically connected to the gate electrode and electrically isolated from the source and drain electrodes.

IPC Classes  ?

  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/40 - Electrodes

14.

N-POLAR DEVICES INCLUDING A DEPLETING LAYER WITH IMPROVED CONDUCTIVITY

      
Application Number US2023061006
Publication Number 2023/147266
Status In Force
Filing Date 2023-01-20
Publication Date 2023-08-03
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Gupta, Geetak
  • Mishra, Umesh
  • Bisi, Davide
  • Lal, Rakesh, K.
  • Rhodes, David, Michael

Abstract

Described herein are lateral III-N (e.g., GaN) devices having a III-N depleting layer. A circuit includes a depletion-mode transistor with a source connected to a drain of an enhancement-mode transistor. The gate of the depletion-mode transistor and the gate of the enhancement-mode transistor are biased at zero volts, and the drain of the depletion-mode transistor is biased at positive voltage to block a current in a forward direction. Then, the bias of the gate of the enhancement-mode transistor is changed to a first voltage greater than the threshold voltage of the enhancement-mode transistor and a first current is allowed to flow through the channel in a forward direction. Then, the bias of the gate of the depletion-mode transistor is changed to a second voltage and a second current is allowed to flow through the channel in a forward direction where the second current is greater than the first current.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 29/68 - Types of semiconductor device controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified, or switched
  • H01L 29/772 - Field-effect transistors
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
  • H01L 29/735 - Lateral transistors
  • H01L 29/739 - Transistor-type devices, i.e. able to continuously respond to applied control signals controlled by field effect
  • H01L 29/76 - Unipolar devices
  • H01L 29/812 - Field-effect transistors with field effect produced by a PN or other rectifying junction gate with a Schottky gate

15.

MODULE ASSEMBLY OF MULTIPLE SEMICONDUCTOR DEVICES WITH INSULATING SUBSTRATES

      
Application Number US2022082182
Publication Number 2023/122694
Status In Force
Filing Date 2022-12-21
Publication Date 2023-06-29
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Bisi, Davide
  • Gupta, Geetak
  • Hosoda, Tsutomu
  • Mishra, Umesh

Abstract

An electronic component comprising and electronic component package including a high thermally conductive package base. The component further includes a first lateral III-N device including a first insulating substrate, the first lateral III-N device comprising a first side and a second side, where a first III-N material structure is on the first side of the first lateral III-N device. A second lateral III-N device including a second insulating substrate, the second lateral III-N device comprising a first side and a second side, where a second III-N material structure is on a first side of the second lateral III-N device. The second side of the first lateral III-N device is directly mounted and physically attached to the thermally conductive package base and the second side of the second lateral III-N device is directly mounted and physically attached to the thermally conductive package base.

IPC Classes  ?

  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H01L 23/14 - Mountings, e.g. non-detachable insulating substrates characterised by the material or its electrical properties
  • H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
  • H01L 23/373 - Cooling facilitated by selection of materials for the device
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors

16.

N-polar devices including a depleting layer with improved conductivity

      
Application Number 17588119
Grant Number 11973138
Status In Force
Filing Date 2022-01-28
First Publication Date 2022-05-19
Grant Date 2024-04-30
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Gupta, Geetak
  • Mishra, Umesh
  • Bisi, Davide
  • Lal, Rakesh K.
  • Rhodes, David Michael

Abstract

Described herein are lateral III-N (e.g., GaN) devices having a III-N depleting layer. A circuit includes a depletion-mode transistor with a source connected to a drain of an enhancement-mode transistor. The gate of the depletion-mode transistor and the gate of the enhancement-mode transistor are biased at zero volts, and the drain of the depletion-mode transistor is biased at positive voltage to block a current in a forward direction. Then, the bias of the gate of the enhancement-mode transistor is changed to a first voltage greater than the threshold voltage of the enhancement-mode transistor and a first current is allowed to flow through the channel in a forward direction. Then, the bias of the gate of the depletion-mode transistor is changed to a second voltage and a second current is allowed to flow through the channel in a forward direction where the second current is greater than the first current.

IPC Classes  ?

  • H03K 17/68 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being bipolar transistors specially adapted for switching AC currents or voltages
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/40 - Electrodes
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors

17.

Switching circuits having drain connected ferrite beads

      
Application Number 17138101
Grant Number 11309884
Status In Force
Filing Date 2020-12-30
First Publication Date 2022-04-19
Grant Date 2022-04-19
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Cuadra, Jason
  • Wu, Yifeng
  • Wang, Zhan

Abstract

A circuit includes an electronic component package that comprises a first lead, a second lead, and a third lead; and a III-N transistor encased in the electronic component package, the III-N transistor including a drain, a gate, and a source, where the source is coupled to the first lead, the gate is coupled to the second lead, and the drain is coupled to the third lead. The circuit includes a high voltage node and a resistor, the resistor having a first terminal coupled to the high voltage node and a second terminal coupled to the third lead. The circuit further includes a ferrite bead connected in parallel to the resistor and coupled between the third lead and the high voltage node. When switching, the deleterious effects of a parasitic inductance of the circuit's power loop are mitigated by the ferrite bead and the resistor.

IPC Classes  ?

  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
  • H03K 17/041 - Modifications for accelerating switching without feedback from the output circuit to the control circuit
  • H03K 17/10 - Modifications for increasing the maximum permissible switched voltage
  • H03K 17/12 - Modifications for increasing the maximum permissible switched current

18.

III-NITRIDE DEVICES WITH THROUGH-VIA STRUCTURES

      
Application Number US2021050981
Publication Number 2022/061181
Status In Force
Filing Date 2021-09-17
Publication Date 2022-03-24
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Gupta, Geetak
  • Mishra, Umesh
  • Bisi, Davide
  • Rhodes, David Michael
  • Lal, Rakesh K.
  • Neufeld, Carl Joseph

Abstract

A semiconductor device comprises a III-N device including an insulating substrate. The insulating substrate includes a first side and a second side. The device further includes a III-N material structure on a first side of the insulating substrate, and a gate electrode, a source electrode, and a drain electrode on a side of the III-N material structure opposite the substrate. A backmetal layer on the second side of the insulating substrate, and a via hole is formed through the III-N material structure and the insulating substrate. A metal formed in the via-hole is electrically connected to the drain electrode on the first side of the substrate and electrically connected to the backmetal layer on the second side of the substrate.

IPC Classes  ?

  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 21/335 - Field-effect transistors
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate

19.

III-NITRIDE DEVICES INCLUDING A DEPLETING LAYER

      
Application Number US2021043060
Publication Number 2022/031465
Status In Force
Filing Date 2021-07-23
Publication Date 2022-02-10
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Bisi, Davide
  • Gupta, Geetak
  • Mishra, Umesh
  • Lal, Rakesh K.

Abstract

Described herein are lateral III-N (e.g. GaN) devices having a III-N depleting layer, for which the III-N material is formed in an N-polar orientation. The III-N device includes a III-N layer structure comprising a III-N channel layer between a III-N barrier layer and a p-type III-N depleting layer. The III-N channel layer includes a 2DEG channel formed therein. The III-N device includes a source electrode and a drain electrode, each of which being electrically connected to the 2DEG channel, and a gate electrode between the source and the drain electrodes, the gate being over the III-N layer structure. The p-type III-N depleting layer includes a first portion that is between the gate and the drain electrode and the p-type III-N depleting layer is electrically connected to the gate electrode and electrically isolated from the source and drain electrodes.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 29/15 - Structures with periodic or quasi periodic potential variation, e.g. multiple quantum wells, superlattices
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT

20.

Integrated design for III-Nitride devices

      
Application Number 17047602
Grant Number 11810971
Status In Force
Filing Date 2020-03-20
First Publication Date 2021-12-30
Grant Date 2023-11-07
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Wu, Yifeng
  • Gritters, John Kirk

Abstract

A semiconductor device comprises a III-N device and a Field Effect Transistor (FET). The III-N device comprises a substrate on a first side of a III-N material structure, a first gate, a first source, and a first drain on a side of the III-N material structure opposite the substrate. The FET comprises a second semiconductor material structure, a second gate, a second source, and a second drain, and the second source being on an opposite side of the second semiconductor material structure from the second drain. The second drain of the FET is directly contacting and electrically connected to the first source of the III-N devices, and a via-hole is formed through a portion of the III-N material structure exposing a portion of the top surface of the substrate and the first gate is electrically connected to the substrate through the via-hole.

IPC Classes  ?

  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 23/48 - Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads or terminal arrangements
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds

21.

MODULE CONFIGURATIONS FOR INTEGRATED III-NITRIDE DEVICES

      
Application Number US2021032710
Publication Number 2021/257222
Status In Force
Filing Date 2021-05-17
Publication Date 2021-12-23
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Rhodes, David Michael
  • Wu, Yifeng
  • Yea, Sung Hae
  • Parikh, Primit

Abstract

An electronic module for a half-bridge circuit includes a base substrate with an insulating layer between a first metal layer and a second metal layer. A trench formed through the first metal layer electrically isolates first, second, and third portions of the first metal layer from one another. A high-side switch includes an enhancement-mode transistor and a depletion-mode transistor. The depletion-mode transistor includes a III-N material structure on an electrically conductive substrate. A drain electrode of the depletion-mode transistor is connected to the first portion, a source electrode of the enhancement-mode transistor is connected to the second portion, a drain electrode of the enhancement-mode transistor is connected to a source electrode of the depletion-mode transistor, a gate electrode of the depletion-mode transistor is connected to the electrically conductive substrate, and the electrically conductive substrate is connected to the second portion.

IPC Classes  ?

  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 27/10 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration
  • H01L 27/105 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration including field-effect components
  • H01L 27/24 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including solid state components for rectifying, amplifying, or switching without a potential-jump barrier or surface barrier
  • H01L 29/66 - Types of semiconductor device

22.

Module configurations for integrated III-Nitride devices

      
Application Number 17308366
Grant Number 11749656
Status In Force
Filing Date 2021-05-05
First Publication Date 2021-12-16
Grant Date 2023-09-05
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Rhodes, David Michael
  • Wu, Yifeng
  • Yea, Sung Hae
  • Parikh, Primit

Abstract

An electronic module for a half-bridge circuit includes a base substrate with an insulating layer between a first metal layer and a second metal layer. A trench formed through the first metal layer electrically isolates first, second, and third portions of the first metal layer from one another. A high-side switch includes an enhancement-mode transistor and a depletion-mode transistor. The depletion-mode transistor includes a III-N material structure on an electrically conductive substrate. A drain electrode of the depletion-mode transistor is connected to the first portion, a source electrode of the enhancement-mode transistor is connected to the second portion, a drain electrode of the enhancement-mode transistor is connected to a source electrode of the depletion-mode transistor, a gate electrode of the depletion-mode transistor is connected to the electrically conductive substrate, and the electrically conductive substrate is connected to the second portion.

IPC Classes  ?

  • H01L 23/373 - Cooling facilitated by selection of materials for the device
  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different subclasses of , , , , or , e.g. forming hybrid circuits
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H01L 23/14 - Mountings, e.g. non-detachable insulating substrates characterised by the material or its electrical properties
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
  • H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement

23.

xO gate insulator

      
Application Number 16070238
Grant Number 11322599
Status In Force
Filing Date 2017-01-13
First Publication Date 2021-02-11
Grant Date 2022-05-03
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Neufeld, Carl Joseph
  • Wu, Mo
  • Kikkawa, Toshihide
  • Mishra, Umesh
  • Liu, Xiang
  • Rhodes, David Michael
  • Gritters, John Kirk
  • Lal, Rakesh K.

Abstract

xO layer with 0.2

IPC Classes  ?

  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/51 - Insulating materials associated therewith
  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
  • H01L 21/28 - Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups
  • H01L 21/324 - Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/49 - Metal-insulator semiconductor electrodes

24.

Switching circuits having drain connected ferrite beads

      
Application Number 16810735
Grant Number 10897249
Status In Force
Filing Date 2020-03-05
First Publication Date 2021-01-19
Grant Date 2021-01-19
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Cuadra, Jason
  • Wu, Yifeng
  • Wang, Zhan

Abstract

A circuit includes an electronic component package that comprises a first lead, a second lead, and a third lead; and a III-N transistor encased in the electronic component package, the III-N transistor including a drain, a gate, and a source, where the source is coupled to the first lead, the gate is coupled to the second lead, and the drain is coupled to the third lead. The circuit includes a high voltage node and a resistor, the resistor having a first terminal coupled to the high voltage node and a second terminal coupled to the third lead. The circuit further includes a ferrite bead connected in parallel to the resistor and coupled between the third lead and the high voltage node. When switching, the deleterious effects of a parasitic inductance of the circuit's power loop are mitigated by the ferrite bead and the resistor.

IPC Classes  ?

  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
  • H03K 17/10 - Modifications for increasing the maximum permissible switched voltage
  • H03K 17/041 - Modifications for accelerating switching without feedback from the output circuit to the control circuit
  • H03K 17/12 - Modifications for increasing the maximum permissible switched current

25.

Lateral III-nitride devices including a vertical gate module

      
Application Number 16923587
Grant Number 12266725
Status In Force
Filing Date 2020-07-08
First Publication Date 2020-10-29
Grant Date 2025-04-01
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Mishra, Umesh
  • Bisi, Davide
  • Gupta, Geetak
  • Neufeld, Carl Joseph
  • Swenson, Brian L.
  • Lal, Rakesh K.

Abstract

A lateral III-N device has a vertical gate module with III-N material orientated in an N-polar or a group-III polar orientation. A III-N material structure has a III-N buffer layer, a III-N barrier layer, and a III-N channel layer. A compositional difference between the III-N barrier layer and the III-N channel layer causes a 2DEG channel to be induced in the III-N channel layer. A p-type III-N body layer is disposed over the III-N channel layer in a source side access region but not over a drain side access region. A n-type III-N capping layer over the p-type III-N body layer. A source electrode that contacts the n-type III-N capping layer is electrically connected to the p-type III-N body layer and is electrically isolated from the 2DEG channel when the gate electrode is biased relative to the source electrode at a voltage that is below a threshold voltage.

IPC Classes  ?

  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/66 - Types of semiconductor device

26.

INTEGRATED DESIGN FOR III-NITRIDE DEVICES

      
Application Number US2020024015
Publication Number 2020/191357
Status In Force
Filing Date 2020-03-20
Publication Date 2020-09-24
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Wu, Yifeng
  • Gritters, John Kirk

Abstract

A semiconductor device comprises a III-N device and a Field Effect Transistor (FET). The III-N device comprises a substrate on a first side of a III-N material structure, a first gate, a first source, and a first drain on a side of the III-N material structure opposite the substrate. The FET comprises a second semiconductor material structure, a second gate, a second source, and a second drain, and the second source being on an opposite side of the second semiconductor material structure from the second drain. The second drain of the FET is directly contacting and electrically connected to the first source of the III-N devices, and a via-hole is formed through a portion of the III-N material structure exposing a portion of the top surface of the substrate and the first gate is electrically connected to the substrate through the via-hole.

IPC Classes  ?

  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 25/06 -
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration

27.

III-nitride devices including a graded depleting layer

      
Application Number 16813577
Grant Number 11121216
Status In Force
Filing Date 2020-03-09
First Publication Date 2020-07-02
Grant Date 2021-09-14
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Mishra, Umesh
  • Lal, Rakesh K.
  • Gupta, Geetak
  • Neufeld, Carl Joseph
  • Rhodes, David

Abstract

A III-N device includes a III-N layer structure including a III-N channel layer, a III-N barrier layer over the III-N channel layer, and a graded III-N layer over the III-N barrier layer having a first side adjacent to the III-N barrier layer and a second side opposite the first side; a first power electrode and a second power electrode; and a gate between the first and second power electrodes, the gate being over the III-N layer structure. A composition of the graded III-N layer is graded so the bandgap of the graded III-N layer adjacent to the first side is greater than the bandgap of the graded III-N layer adjacent to the second side. A region of the graded III-N layer is (i) between the gate and the second power electrode, and (ii) electrically connected to the first power electrode and electrically isolated from the second power electrode.

IPC Classes  ?

  • H01L 29/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details of semiconductor bodies or of electrodes thereof
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/872 - Schottky diodes
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/40 - Electrodes
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 23/495 - Lead-frames

28.

Switching circuits having drain connected ferrite beads

      
Application Number 16195578
Grant Number 10630285
Status In Force
Filing Date 2018-11-19
First Publication Date 2020-04-21
Grant Date 2020-04-21
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Cuadra, Jason
  • Wu, Yifeng
  • Wang, Zhan

Abstract

A circuit includes an electronic component package that comprises a first lead, a second lead, and a third lead; and a III-N transistor encased in the electronic component package, the III-N transistor including a drain, a gate, and a source, where the source is coupled to the first lead, the gate is coupled to the second lead, and the drain is coupled to the third lead. The circuit includes a high voltage node and a resistor, the resistor having a first terminal coupled to the high voltage node and a second terminal coupled to the third lead. The circuit further includes a ferrite bead connected in parallel to the resistor and coupled between the third lead and the high voltage node. When switching, the deleterious effects of a parasitic inductance of the circuit's power loop are mitigated by the ferrite bead and the resistor.

IPC Classes  ?

  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
  • H03K 17/041 - Modifications for accelerating switching without feedback from the output circuit to the control circuit
  • H03K 17/10 - Modifications for increasing the maximum permissible switched voltage
  • H03K 17/12 - Modifications for increasing the maximum permissible switched current

29.

Lateral III-nitride devices including a vertical gate module

      
Application Number 16598510
Grant Number 10756207
Status In Force
Filing Date 2019-10-10
First Publication Date 2020-04-16
Grant Date 2020-08-25
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Mishra, Umesh
  • Bisi, Davide
  • Gupta, Geetak
  • Neufeld, Carl Joseph
  • Swenson, Brian L.
  • Lal, Rakesh K.

Abstract

A lateral III-N device has a vertical gate module with III-N material orientated in an N-polar or a group-III polar orientation. A III-N material structure has a III-N buffer layer, a III-N barrier layer, and a III-N channel layer. A compositional difference between the III-N barrier layer and the III-N channel layer causes a 2DEG channel to be induced in the III-N channel layer. A p-type III-N body layer is disposed over the III-N channel layer in a source side access region but not over a drain side access region. A n-type III-N capping layer over the p-type III-N body layer. A source electrode that contacts the n-type III-N capping layer is electrically connected to the p-type III-N body layer and is electrically isolated from the 2DEG channel when the gate electrode is biased relative to the source electrode at a voltage that is below a threshold voltage.

IPC Classes  ?

  • H01L 31/0256 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by their semiconductor bodies characterised by the material
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds

30.

III-nitride devices including a graded depleting layer

      
Application Number 16287211
Grant Number 10629681
Status In Force
Filing Date 2019-02-27
First Publication Date 2019-06-27
Grant Date 2020-04-21
Owner Transphorm Technology, Inc. (USA)
Inventor
  • Mishra, Umesh
  • Lal, Rakesh K.
  • Gupta, Geetak
  • Neufeld, Carl Joseph
  • Rhodes, David

Abstract

A III-N device includes a III-N layer structure including a III-N channel layer, a III-N barrier layer over the III-N channel layer, and a graded III-N layer over the III-N barrier layer having a first side adjacent to the III-N barrier layer and a second side opposite the first side; a first power electrode and a second power electrode; and a gate between the first and second power electrodes, the gate being over the III-N layer structure. A composition of the graded III-N layer is graded so the bandgap of the graded III-N layer adjacent to the first side is greater than the bandgap of the graded III-N layer adjacent to the second side. A region of the graded III-N layer is (i) between the gate and the second power electrode, and (ii) electrically connected to the first power electrode and electrically isolated from the second power electrode.

IPC Classes  ?

  • H01L 29/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details of semiconductor bodies or of electrodes thereof
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/872 - Schottky diodes
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/40 - Electrodes
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 23/495 - Lead-frames

31.

Enhancement-mode III-nitride devices

      
Application Number 16029505
Grant Number 10535763
Status In Force
Filing Date 2018-07-06
First Publication Date 2018-11-01
Grant Date 2020-01-14
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Lal, Rakesh K.

Abstract

A III-N enhancement-mode transistor includes a III-N structure including a conductive channel, source and drain contacts, and a gate electrode between the source and drain contacts. An insulator layer is over the III-N structure, with a recess formed through the insulator layer in a gate region of the transistor, with the gate electrode at least partially in the recess. The transistor further includes a field plate having a portion between the gate electrode and the drain contact, the field plate being electrically connected to the source contact. The gate electrode includes an extending portion that is outside the recess and extends towards the drain contact. The separation between the conductive channel and the extending portion of the gate electrode is greater than the separation between the conductive channel and the portion of the field plate that is between the gate electrode and the drain contact.

IPC Classes  ?

  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 29/40 - Electrodes
  • H01L 27/085 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only
  • H01L 21/8252 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using III-V technology
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
  • H01L 23/535 - Arrangements for conducting electric current within the device in operation from one component to another including internal interconnections, e.g. cross-under constructions
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
  • H01L 23/29 - Encapsulation, e.g. encapsulating layers, coatings characterised by the material
  • H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
  • H01L 23/00 - Details of semiconductor or other solid state devices
  • H01L 29/51 - Insulating materials associated therewith

32.

Conditions for burn-in of high power semiconductors

      
Application Number 15955515
Grant Number 10319648
Status In Force
Filing Date 2018-04-17
First Publication Date 2018-10-18
Grant Date 2019-06-11
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Smith, Kurt Vernon
  • Shen, Likun
  • Rhodes, David Michael
  • Barr, Ronald Avrom
  • Mckay, James Leroy

Abstract

Techniques for improving reliability of III-N devices include holding the III-N devices at a first temperature less than or equal to 30° for a first period of time while applying a first gate-source voltage lower than a threshold voltage of the III-N devices and a first drain-source voltage greater than 0.2 times a break down voltage of the III-N devices; and holding the III-N devices at a second temperature greater than the first temperature for a second period of time while applying a second gate-source voltage lower than a threshold voltage of the III-N devices and a second drain-source voltage greater than 0.2 times a breakdown voltage of the III-N devices. After holding the III-N devices at the first and second temperatures, screening the III-N devices based on electrical performance of one or more parameters of the III-N devices.

IPC Classes  ?

  • H01L 21/00 - Processes or apparatus specially adapted for the manufacture or treatment of semiconductor or solid-state devices, or of parts thereof
  • H01L 21/66 - Testing or measuring during manufacture or treatment
  • H01L 21/48 - Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups or
  • H01L 21/78 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
  • G01R 31/26 - Testing of individual semiconductor devices
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 21/67 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereofApparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components

33.

Bridgeless power factor correction circuits

      
Application Number 15428726
Grant Number 10063138
Status In Force
Filing Date 2017-02-09
First Publication Date 2018-08-28
Grant Date 2018-08-28
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Zhou, Liang
  • Wu, Yifeng

Abstract

A power factor correction circuit comprises a pair of III-N based switches coupled to a first reference ground, and an inductive component connected in series with a current sensing resistor. A first side of the current sensing resistor is coupled to a second reference ground which is electrically isolated from the first reference ground, and a second side of the current sensing resistor is coupled to a control circuit. The control circuit is also coupled to the second reference ground and is configured to measure current flowing through the inductive component during operation of the power factor correction circuit.

IPC Classes  ?

  • H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters

34.

III-nitride devices including a graded depleting layer

      
Application Number 15564498
Grant Number 10224401
Status In Force
Filing Date 2017-05-31
First Publication Date 2018-06-07
Grant Date 2019-03-05
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Lal, Rakesh K.
  • Gupta, Geetak
  • Neufeld, Carl Joseph
  • Rhodes, David

Abstract

A III-N device includes a III-N layer structure including a III-N channel layer, a III-N barrier layer over the III-N channel layer, and a graded III-N layer over the III-N barrier layer having a first side adjacent to the III-N barrier layer and a second side opposite the first side; a first power electrode and a second power electrode; and a gate between the first and second power electrodes, the gate being over the III-N layer structure. A composition of the graded III-N layer is graded so the bandgap of the graded III-N layer adjacent to the first side is greater than the bandgap of the graded III-N layer adjacent to the second side. A region of the graded III-N layer is (i) between the gate and the second power electrode, and (ii) electrically connected to the first power electrode and electrically isolated from the second power electrode.

IPC Classes  ?

  • H01L 29/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details of semiconductor bodies or of electrodes thereof
  • H01L 23/495 - Lead-frames
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/872 - Schottky diodes
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/40 - Electrodes
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes

35.

III-Nitride transistor including a III-N depleting layer

      
Application Number 15836157
Grant Number 10043896
Status In Force
Filing Date 2017-12-08
First Publication Date 2018-04-12
Grant Date 2018-08-07
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Lal, Rakesh K.
  • Keller, Stacia
  • Chowdhury, Srabanti

Abstract

A transistor includes a III-N layer structure including a III-N channel layer between a III-N barrier layer and a III-N depleting layer, where the III-N channel layer includes a 2DEG channel formed adjacent an interface between the III-N channel layer and the III-N barrier layer; a source and a drain, each of which being directly connected to the III-N channel layer; a gate between the source and the drain, the gate being over the III-N layer structure, where the III-N depleting layer includes a first portion that is disposed in a device access region between the gate and the drain; and where the source electrically contacts the first portion of the III-N depleting layer, and the drain is electrically isolated from the first portion of the III-N depleting layer.

IPC Classes  ?

  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/15 - Structures with periodic or quasi periodic potential variation, e.g. multiple quantum wells, superlattices
  • H01L 29/04 - Semiconductor bodies characterised by their crystalline structure, e.g. polycrystalline, cubic or particular orientation of crystalline planes
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/51 - Insulating materials associated therewith

36.

Paralleling of switching devices for high power circuits

      
Application Number 15554170
Grant Number 10200030
Status In Force
Filing Date 2016-03-11
First Publication Date 2018-03-22
Grant Date 2019-02-05
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Wang, Zhan

Abstract

A circuit includes first and second half bridges, a first inductor, a second inductor, and a main inductor. The half bridges each include a high side switch, a low side switch, and a gate driver configured to apply switching signals to the high side switch and the low side switch. The first inductor has one side electrically connected to an output node of the first half bridge between the high side switch and the low side switch. The second inductor has one side electrically connected to an output node of the second half bridge between the high side switch and the low side switch. The main inductor is coupled to a node between the other sides of the first and second inductors. The main inductor has a greater inductance than each of the first and second inductors, and the first and second inductors are inversely coupled to one another.

IPC Classes  ?

  • H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
  • H03K 17/12 - Modifications for increasing the maximum permissible switched current
  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H03K 17/64 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being bipolar transistors having inductive loads
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H02M 7/5395 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
  • H02M 1/00 - Details of apparatus for conversion

37.

Switching circuits having ferrite beads

      
Application Number 15491920
Grant Number 09991884
Status In Force
Filing Date 2017-04-19
First Publication Date 2017-08-03
Grant Date 2018-06-05
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Wang, Zhan
  • Wu, Yifeng
  • Honea, James

Abstract

A circuit includes an electronic component package that comprises at least a first lead, a III-N device in the electronic component package, a gate driver, and a ferrite bead. The III-N device comprises a drain, gate, and source, where the source is coupled to the first lead. The gate driver comprises a first terminal and a second terminal, where the first terminal is coupled to the first lead. The ferrite bead is coupled between the gate of the III-N transistor and the second terminal of the gate driver. When switching, the deleterious effects of the parasitic inductance of the circuit gate loop are mitigated by the ferrite bead.

IPC Classes  ?

  • H03B 1/00 - GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNERGENERATION OF NOISE BY SUCH CIRCUITS Details
  • H03K 3/00 - Circuits for generating electric pulsesMonostable, bistable or multistable circuits
  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/16 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic System in uncombined form
  • H03K 17/10 - Modifications for increasing the maximum permissible switched voltage
  • H03K 17/12 - Modifications for increasing the maximum permissible switched current
  • H01L 23/495 - Lead-frames
  • H01L 23/552 - Protection against radiation, e.g. light
  • H01L 23/64 - Impedance arrangements
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H03K 17/041 - Modifications for accelerating switching without feedback from the output circuit to the control circuit
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
  • H01L 23/00 - Details of semiconductor or other solid state devices

38.

Enhancement-mode III-nitride devices

      
Application Number 15440404
Grant Number 10043898
Status In Force
Filing Date 2017-02-23
First Publication Date 2017-06-08
Grant Date 2018-08-07
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Lal, Rakesh K.

Abstract

A III-N enhancement-mode transistor includes a III-N structure including a conductive channel, source and drain contacts, and a gate electrode between the source and drain contacts. An insulator layer is over the III-N structure, with a recess formed through the insulator layer in a gate region of the transistor, with the gate electrode at least partially in the recess. The transistor further includes a field plate having a portion between the gate electrode and the drain contact, the field plate being electrically connected to the source contact. The gate electrode includes an extending portion that is outside the recess and extends towards the drain contact. The separation between the conductive channel and the extending portion of the gate electrode is greater than the separation between the conductive channel and the portion of the field plate that is between the gate electrode and the drain contact.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H01L 23/535 - Arrangements for conducting electric current within the device in operation from one component to another including internal interconnections, e.g. cross-under constructions
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 29/40 - Electrodes
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 21/8252 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using III-V technology
  • H01L 23/00 - Details of semiconductor or other solid state devices
  • H01L 29/51 - Insulating materials associated therewith
  • H01L 23/29 - Encapsulation, e.g. encapsulating layers, coatings characterised by the material
  • H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof

39.

Switching circuits having ferrite beads

      
Application Number 15363987
Grant Number 09660640
Status In Force
Filing Date 2016-11-29
First Publication Date 2017-03-23
Grant Date 2017-05-23
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Wang, Zhan
  • Wu, Yifeng
  • Honea, James

Abstract

A circuit includes an electronic component package that comprises at least a first lead, a III-N device in the electronic component package, a gate driver, and a ferrite bead. The III-N device comprises a drain, gate, and source, where the source is coupled to the first lead. The gate driver comprises a first terminal and a second terminal, where the first terminal is coupled to the first lead. The ferrite bead is coupled between the gate of the III-N transistor and the second terminal of the gate driver. When switching, the deleterious effects of the parasitic inductance of the circuit gate loop are mitigated by the ferrite bead.

IPC Classes  ?

  • H03B 1/00 - GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNERGENERATION OF NOISE BY SUCH CIRCUITS Details
  • H03K 3/00 - Circuits for generating electric pulsesMonostable, bistable or multistable circuits
  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 23/552 - Protection against radiation, e.g. light
  • H01L 23/495 - Lead-frames
  • H01L 23/64 - Impedance arrangements
  • H03K 17/10 - Modifications for increasing the maximum permissible switched voltage
  • H03K 17/12 - Modifications for increasing the maximum permissible switched current
  • H03K 17/041 - Modifications for accelerating switching without feedback from the output circuit to the control circuit
  • H01L 23/00 - Details of semiconductor or other solid state devices

40.

Bridgeless power factor correction circuits

      
Application Number 14802333
Grant Number 09590494
Status In Force
Filing Date 2015-07-17
First Publication Date 2017-03-07
Grant Date 2017-03-07
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Zhou, Liang
  • Wu, Yifeng

Abstract

A power factor correction circuit comprises a pair of III-N based switches coupled to a first reference ground, and an inductive component connected in series with a current sensing resistor. A first side of the current sensing resistor is coupled to a second reference ground which is electrically isolated from the first reference ground, and a second side of the current sensing resistor is coupled to a control circuit. The control circuit is also coupled to the second reference ground and is configured to measure current flowing through the inductive component during operation of the power factor correction circuit.

IPC Classes  ?

  • H02M 7/06 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
  • H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
  • H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
  • G01R 1/20 - Modifications of basic electric elements for use in electric measuring instrumentsStructural combinations of such elements with such instruments
  • G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof

41.

Methods of forming reverse side engineered III-nitride devices

      
Application Number 15288120
Grant Number 10199217
Status In Force
Filing Date 2016-10-07
First Publication Date 2017-01-26
Grant Date 2019-02-05
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Chu, Rongming
  • Mishra, Umesh
  • Lal, Rakesh K.

Abstract

Group III-nitride devices are described that include a stack of III-nitride layers, passivation layers, and conductive contacts. The stack includes a channel layer with a 2DEG channel, a barrier layer and a spacer layer. One passivation layer directly contacts a surface of the spacer layer on a side opposite to the channel layer and is an electrical insulator. The stack of III-nitride layers and the first passivation layer form a structure with a reverse side proximate to the first passivation layer and an obverse side proximate to the barrier layer. Another passivation layer is on the obverse side of the structure. Defected nucleation and stress management layers that form a buffer layer during the formation process can be partially or entirely removed.

IPC Classes  ?

  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/861 - Diodes
  • H01L 23/29 - Encapsulation, e.g. encapsulating layers, coatings characterised by the material
  • H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 23/00 - Details of semiconductor or other solid state devices

42.

Enhancement mode III-N HEMTs

      
Application Number 15242266
Grant Number 09941399
Status In Force
Filing Date 2016-08-19
First Publication Date 2016-12-08
Grant Date 2018-04-10
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Coffie, Robert
  • Shen, Likun
  • Ben-Yaacov, Ilan
  • Parikh, Primit

Abstract

A III-N semiconductor device that includes a substrate and a nitride channel layer including a region partly beneath a gate region, and two channel access regions on opposite sides of the part beneath the gate. The channel access regions may be in a different layer from the region beneath the gate. The device includes an AlXN layer adjacent the channel layer wherein X is gallium, indium or their combination, and a preferably n-doped GaN layer adjacent the AlXN layer in the areas adjacent to the channel access regions. The concentration of Al in the AlXN layer, the AlXN layer thickness and the n-doping concentration in the n-doped GaN layer are selected to induce a 2DEG charge in channel access regions without inducing any substantial 2DEG charge beneath the gate, so that the channel is not conductive in the absence of a switching voltage applied to the gate.

IPC Classes  ?

  • H03H 11/46 - One-port networks
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/36 - Semiconductor bodies characterised by the concentration or distribution of impurities
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/08 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/207 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds further characterised by the doping material
  • H01L 29/51 - Insulating materials associated therewith

43.

III-nitride transistor including a p-type depleting layer

      
Application Number 15227240
Grant Number 09842922
Status In Force
Filing Date 2016-08-03
First Publication Date 2016-11-24
Grant Date 2017-12-12
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Lal, Rakesh K.
  • Keller, Stacia
  • Chowdhury, Srabanti

Abstract

A transistor includes a III-N layer structure comprising a III-N channel layer between a III-N barrier layer and a p-type III-N layer. The transistor further includes a source, a drain, and a gate between the source and the drain, the gate being over the III-N layer structure. The p-type III-N layer includes a first portion that is at least partially in a device access region between the gate and the drain, and the first portion of the p-type III-N layer is electrically connected to the source and electrically isolated from the drain. When the transistor is biased in the off state, the p-type layer can cause channel charge in the device access region to deplete as the drain voltage increases, thereby leading to higher breakdown voltages.

IPC Classes  ?

  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/04 - Semiconductor bodies characterised by their crystalline structure, e.g. polycrystalline, cubic or particular orientation of crystalline planes
  • H01L 29/15 - Structures with periodic or quasi periodic potential variation, e.g. multiple quantum wells, superlattices
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/51 - Insulating materials associated therewith

44.

Semiconductor devices with field plates

      
Application Number 15181805
Grant Number 09831315
Status In Force
Filing Date 2016-06-14
First Publication Date 2016-10-06
Grant Date 2017-11-28
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Chu, Rongming
  • Coffie, Robert

Abstract

A III-N device is described with a III-N material layer, an insulator layer on a surface of the III-N material layer, an etch stop layer on an opposite side of the insulator layer from the III-N material layer, and an electrode defining layer on an opposite side of the etch stop layer from the insulator layer. A recess is formed in the electrode defining layer. An electrode is formed in the recess. The insulator can have a precisely controlled thickness, particularly between the electrode and III-N material layer.

IPC Classes  ?

  • H01L 29/40 - Electrodes
  • H01L 21/283 - Deposition of conductive or insulating materials for electrodes
  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
  • H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
  • H01L 21/306 - Chemical or electrical treatment, e.g. electrolytic etching
  • H01L 21/311 - Etching the insulating layers
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/51 - Insulating materials associated therewith
  • H01L 21/765 - Making of isolation regions between components by field-effect
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 21/285 - Deposition of conductive or insulating materials for electrodes from a gas or vapour, e.g. condensation
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/872 - Schottky diodes

45.

Semiconductor modules and methods of forming the same

      
Application Number 15138681
Grant Number 09818686
Status In Force
Filing Date 2016-04-26
First Publication Date 2016-08-18
Grant Date 2017-11-14
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Wu, Yifeng
  • Yea, Sung Hae

Abstract

Electronic modules, and methods of forming and operating modules, are described. The modules include a capacitor, a first switching device, and a second switching device. The electronic modules further include a substrate such as a DBC substrate, which includes an insulating layer between a first metal layer and a second metal layer, and may include multiple layers of DBC substrates stacked over one another. The first metal layer includes a first portion and a second portion isolated from one another by a trench formed through the first metal layer between the two portions. The first and second switching devices are over the first metal layer, a first terminal of the capacitor is electrically connected to the first portion of the first metal layer, and a second terminal of the capacitor is electrically connected to the second portion of the first metal layer, with the capacitor extending over the trench.

IPC Classes  ?

  • H01L 23/498 - Leads on insulating substrates
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H01L 21/56 - Encapsulations, e.g. encapsulating layers, coatings
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 23/373 - Cooling facilitated by selection of materials for the device
  • H01L 25/065 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
  • H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
  • H01L 25/00 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices
  • H01L 23/552 - Protection against radiation, e.g. light
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 23/00 - Details of semiconductor or other solid state devices

46.

Forming enhancement mode III-nitride devices

      
Application Number 15065597
Grant Number 09935190
Status In Force
Filing Date 2016-03-09
First Publication Date 2016-06-30
Grant Date 2018-04-03
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Wu, Mo
  • Lal, Rakesh K.
  • Ben-Yaacov, Ilan
  • Mishra, Umesh
  • Neufeld, Carl Joseph

Abstract

A method of fabricating a III-N device includes forming a III-N channel layer on a substrate, a III-N barrier layer on the channel layer, an insulator layer on the barrier layer, and a trench in a first portion of the device. Forming the trench comprises removing the insulator layer and a part of the barrier layer in the first portion of the device, such that a remaining portion of the barrier layer in the first portion of the device has a thickness away from a top surface of the channel layer, the thickness being within a predetermined thickness range, annealing the III-N device in a gas ambient including oxygen at an elevated temperature to oxidize the remaining portion of the barrier layer in the first portion of the device, and removing the oxidized remaining portion of the barrier layer in the first portion of the device.

IPC Classes  ?

  • H01L 29/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details of semiconductor bodies or of electrodes thereof
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 21/28 - Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/51 - Insulating materials associated therewith
  • H01L 21/306 - Chemical or electrical treatment, e.g. electrolytic etching
  • H01L 21/308 - Chemical or electrical treatment, e.g. electrolytic etching using masks
  • H01L 21/311 - Etching the insulating layers
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof

47.

Gate structures for III-N devices

      
Application Number 14970375
Grant Number 09536966
Status In Force
Filing Date 2015-12-15
First Publication Date 2016-06-16
Grant Date 2017-01-03
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Ogino, Tsutomu

Abstract

A semiconductor device includes a III-N layer, a plurality of parallel conductive fingers on the III-N layer, an insulator layer over the III-N layer, and a gate. The plurality of parallel conductive fingers includes a source and drain bus, a plurality of source fingers coupled to the source bus and extending from the source bus towards the drain bus to respective source finger ends, and a plurality of drain fingers coupled to the drain bus and extending from the drain bus towards the source bus to respective drain finger ends, the drain fingers being interdigitated between the source fingers. The gate comprises a plurality of straight and a plurality of connecting sections, each straight section between a source finger and adjacent drain finger, and the connecting sections each joining two adjacent straight sections and curving around a respective source or drain finger end.

IPC Classes  ?

  • H01L 29/51 - Insulating materials associated therewith
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched

48.

Recessed ohmic contacts in a III-N device

      
Application Number 14572670
Grant Number 09536967
Status In Force
Filing Date 2014-12-16
First Publication Date 2016-06-16
Grant Date 2017-01-03
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Kikkawa, Toshihide
  • Kiuchi, Kenji
  • Hosoda, Tsutomu
  • Kanamura, Masahito
  • Mochizuki, Akitoshi

Abstract

A device includes a III-N layer having an upper side and a lower side, the lower side being opposite the upper side, and at least one conductive contact on the upper side of the III-N layer, the conductive contact extending into the III-N layer. The conductive contact comprises a top side facing away from the lower side of the III-N layer, and a bottom side facing towards the lower side of the III-N layer. The bottom side includes a first end and a second end opposite the first end, a first side rising from the first end to an intermediate point closer to the top side than the first end, and a second side falling from the intermediate point to the second end further from the top side than the intermediate point.

IPC Classes  ?

  • H01L 29/15 - Structures with periodic or quasi periodic potential variation, e.g. multiple quantum wells, superlattices
  • H01L 31/0256 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by their semiconductor bodies characterised by the material
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 21/3065 - Plasma etchingReactive-ion etching
  • H01L 21/308 - Chemical or electrical treatment, e.g. electrolytic etching using masks
  • H01L 21/324 - Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 21/285 - Deposition of conductive or insulating materials for electrodes from a gas or vapour, e.g. condensation
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds

49.

Carbon doping semiconductor devices

      
Application Number 14991188
Grant Number 09865719
Status In Force
Filing Date 2016-01-08
First Publication Date 2016-05-05
Grant Date 2018-01-09
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Keller, Stacia
  • Swenson, Brian L.
  • Fichtenbaum, Nicholas

Abstract

−2.

IPC Classes  ?

  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/207 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds further characterised by the doping material
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/32 - Semiconductor bodies having polished or roughened surface the imperfections being within the semiconductor body
  • H01L 29/872 - Schottky diodes
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes

50.

Semiconductor power modules and devices

      
Application Number 14950411
Grant Number 09741702
Status In Force
Filing Date 2015-11-24
First Publication Date 2016-03-17
Grant Date 2017-08-22
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Wu, Yifeng

Abstract

An electronic component is described which includes a first transistor encased in a first package, the first transistor being mounted over a first conductive portion of the first package, and a second transistor encased in a second package, the second transistor being mounted over a second conductive portion of the second package. The component further includes a substrate comprising an insulating layer between a first metal layer and a second metal layer. The first package is on one side of the substrate with the first conductive portion being electrically connected to the first metal layer, and the second package is on another side of the substrate with the second conductive portion being electrically connected to the second metal layer. The first package is opposite the second package, with at least 50% of a first area of the first conductive portion being opposite a second area of the second conductive portion.

IPC Classes  ?

  • H01L 25/00 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices
  • H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
  • H05K 1/02 - Printed circuits Details
  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H01L 23/12 - Mountings, e.g. non-detachable insulating substrates
  • H01L 23/367 - Cooling facilitated by shape of device
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
  • H01L 23/498 - Leads on insulating substrates
  • H01L 25/11 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices having separate containers the devices being of a type provided for in subclass
  • H05K 1/16 - Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
  • H01L 23/552 - Protection against radiation, e.g. light
  • H01L 23/64 - Impedance arrangements
  • H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different subclasses of , , , , or , e.g. forming hybrid circuits

51.

Enhancement mode III-N HEMTs

      
Application Number 14945341
Grant Number 09437708
Status In Force
Filing Date 2015-11-18
First Publication Date 2016-03-10
Grant Date 2016-09-06
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Coffie, Robert
  • Shen, Likun
  • Ben-Yaacov, Ilan
  • Parikh, Primit

Abstract

A III-N semiconductor device that includes a substrate and a nitride channel layer including a region partly beneath a gate region, and two channel access regions on opposite sides of the part beneath the gate. The channel access regions may be in a different layer from the region beneath the gate. The device includes an AlXN layer adjacent the channel layer wherein X is gallium, indium or their combination, and a preferably n-doped GaN layer adjacent the AlXN layer in the areas adjacent to the channel access regions. The concentration of Al in the AlXN layer, the AlXN layer thickness and the n-doping concentration in the n-doped GaN layer are selected to induce a 2DEG charge in channel access regions without inducing any substantial 2DEG charge beneath the gate, so that the channel is not conductive in the absence of a switching voltage applied to the gate.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/36 - Semiconductor bodies characterised by the concentration or distribution of impurities
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/08 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/207 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds further characterised by the doping material
  • H01L 29/51 - Insulating materials associated therewith

52.

Semiconductor devices with integrated hole collectors

      
Application Number 14934565
Grant Number 09634100
Status In Force
Filing Date 2015-11-06
First Publication Date 2016-03-03
Grant Date 2017-04-25
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Chowdhury, Srabanti
  • Ben-Yaacov, Ilan

Abstract

Transistor devices which include semiconductor layers with integrated hole collector regions are described. The hole collector regions are configured to collect holes generated in the transistor device during operation and transport them away from the active regions of the device. The hole collector regions can be electrically connected or coupled to the source, the drain, or a field plate of the device. The hole collector regions can be doped, for example p-type or nominally p-type, and can be capable of conducting holes but not electrons.

IPC Classes  ?

  • H01L 31/0328 - Inorganic materials including, apart from doping materials or other impurities, semiconductor materials provided for in two or more of groups
  • H01L 29/40 - Electrodes
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/207 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds further characterised by the doping material
  • H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched

53.

Buffer layer structures suited for III-nitride devices with foreign substrates

      
Application Number 14885943
Grant Number 09685323
Status In Force
Filing Date 2015-10-16
First Publication Date 2016-02-11
Grant Date 2017-06-20
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Keller, Stacia
  • Swenson, Brian L.
  • Fichtenbaum, Nicholas

Abstract

Embodiments of the present disclosure include a buffer structure suited for III-N device having a foreign substrate. The buffer structure can include a first buffer layer having a first aluminum composition and a second buffer layer formed on the first buffer layer, the second buffer layer having a second aluminum composition. The buffer structure further includes a third buffer layer formed on the second buffer layer at a second interface, the third buffer layer having a third aluminum composition. The first aluminum composition decreases in the first buffer layer towards the interface and the second aluminum composition throughout the second buffer layer is greater than the first aluminum composition at the interface.

IPC Classes  ?

  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/66 - Types of semiconductor device

54.

Electrodes for semiconductor devices and methods of forming the same

      
Application Number 14920059
Grant Number 09520491
Status In Force
Filing Date 2015-10-22
First Publication Date 2016-02-11
Grant Date 2016-12-13
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Chowdhury, Srabanti
  • Mishra, Umesh
  • Dora, Yuvaraj

Abstract

A III-N semiconductor HEMT device includes an electrode-defining layer on a III-N material structure. The electrode-defining layer has a recess with a first sidewall proximal to the drain and a second sidewall proximal to the source, each sidewall comprising a plurality of steps. A portion of the recess distal from the III-N material structure has a larger width than a portion of the recess proximal to the III-N material structure. An electrode is in the recess, the electrode including an extending portion over the first sidewall. A portion of the electrode-defining layer is between the extending portion and the III-N material structure. The first sidewall forms a first effective angle relative to the surface of the III-N material structure and the second sidewall forms a second effective angle relative to the surface of the III-N material structure, the second effective angle being larger than the first effective angle.

IPC Classes  ?

  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 21/283 - Deposition of conductive or insulating materials for electrodes
  • H01L 29/41 - Electrodes characterised by their shape, relative sizes or dispositions
  • H01L 29/40 - Electrodes
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/04 - Semiconductor bodies characterised by their crystalline structure, e.g. polycrystalline, cubic or particular orientation of crystalline planes
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 21/28 - Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups
  • H01L 21/768 - Applying interconnections to be used for carrying current between separate components within a device
  • H01L 23/29 - Encapsulation, e.g. encapsulating layers, coatings characterised by the material
  • H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 21/285 - Deposition of conductive or insulating materials for electrodes from a gas or vapour, e.g. condensation
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions

55.

Semiconductor electronic components with integrated current limiters

      
Application Number 14920760
Grant Number 09443849
Status In Force
Filing Date 2015-10-22
First Publication Date 2016-02-11
Grant Date 2016-09-13
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Wu, Yifeng
  • Mishra, Umesh
  • Chowdhury, Srabanti

Abstract

An electronic component includes a high-voltage depletion-mode transistor and a low-voltage enhancement-mode transistor. A source electrode of the high-voltage depletion-mode transistor is electrically connected to a drain electrode of the low-voltage enhancement-mode transistor, and a gate electrode of the high-voltage depletion-mode transistor is electrically coupled to the source electrode of the low-voltage enhancement-mode transistor. The on-resistance of the enhancement-mode transistor is less than the on-resistance of the depletion-mode transistor, and the maximum current level of the enhancement-mode transistor is smaller than the maximum current level of the depletion-mode transistor.

IPC Classes  ?

  • H01L 27/12 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/16 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic System in uncombined form
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors

56.

Forming enhancement mode III-nitride devices

      
Application Number 14542937
Grant Number 09318593
Status In Force
Filing Date 2014-11-17
First Publication Date 2016-01-21
Grant Date 2016-04-19
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Wu, Mo
  • Lal, Rakesh K.
  • Ben-Yaacov, Ilan
  • Mishra, Umesh
  • Neufeld, Carl Joseph

Abstract

A method of fabricating a III-N device includes forming a III-N channel layer on a substrate, a III-N barrier layer on the channel layer, an insulator layer on the barrier layer, and a trench in a first portion of the device. Forming the trench comprises removing the insulator layer and a part of the barrier layer in the first portion of the device, such that a remaining portion of the barrier layer in the first portion of the device has a thickness away from a top surface of the channel layer, the thickness being within a predetermined thickness range, annealing the III-N device in a gas ambient including oxygen at an elevated temperature to oxidize the remaining portion of the barrier layer in the first portion of the device, and removing the oxidized remaining portion of the barrier layer in the first portion of the device.

IPC Classes  ?

  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/66 - Types of semiconductor device

57.

Switching circuits having ferrite beads

      
Application Number 14323777
Grant Number 09543940
Status In Force
Filing Date 2014-07-03
First Publication Date 2016-01-07
Grant Date 2017-01-10
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Wang, Zhan
  • Wu, Yifeng
  • Honea, James

Abstract

A circuit includes an electronic component package that comprises at least a first lead, a III-N device in the electronic component package, a gate driver, and a ferrite bead. The III-N device comprises a drain, gate, and source, where the source is coupled to the first lead. The gate driver comprises a first terminal and a second terminal, where the first terminal is coupled to the first lead. The ferrite bead is coupled between the gate of the III-N transistor and the second terminal of the gate driver. When switching, the deleterious effects of the parasitic inductance of the circuit gate loop are mitigated by the ferrite bead.

IPC Classes  ?

  • H03B 1/00 - GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNERGENERATION OF NOISE BY SUCH CIRCUITS Details
  • H03K 3/00 - Circuits for generating electric pulsesMonostable, bistable or multistable circuits
  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/16 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic System in uncombined form
  • H03K 17/10 - Modifications for increasing the maximum permissible switched voltage
  • H03K 17/12 - Modifications for increasing the maximum permissible switched current
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors

58.

Transistors with isolation regions

      
Application Number 14810906
Grant Number 09437707
Status In Force
Filing Date 2015-07-28
First Publication Date 2015-11-19
Grant Date 2016-09-06
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Chowdhury, Srabanti

Abstract

A transistor device is described that includes a source, a gate, a drain, a semiconductor material which includes a gate region between the source and the drain, a plurality of channel access regions in the semiconductor material on either side of the gate, a channel in the semiconductor material having an effective width in the gate region and in the channel access regions, and an isolation region in the gate region. The isolation region serves to reduce the effective width of the channel in the gate region without substantially reducing the effective width of the channel in the access regions. Alternatively, the isolation region can be configured to collect holes that are generated in the transistor device. The isolation region may simultaneously achieve both of these functions.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/207 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds further characterised by the doping material
  • H01L 29/40 - Electrodes
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched

59.

N-polar III-nitride transistors

      
Application Number 14744526
Grant Number 09490324
Status In Force
Filing Date 2015-06-19
First Publication Date 2015-10-08
Grant Date 2016-11-08
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Chowdhury, Srabanti
  • Neufeld, Carl Joseph

Abstract

An N-polar III-N transistor includes a III-N buffer layer, a first III-N barrier layer, and a III-N channel layer, the III-N channel layer having a gate region and a plurality of access regions on opposite sides of the gate region. The compositional difference between the first III-N barrier layer and the III-N channel layer causes a conductive channel to be induced in the access regions of the III-N channel layer. The transistor also includes a source, a gate, a drain, and a second III-N barrier layer between the gate and the III-N channel layer. The second III-N barrier layer has an N-face proximal to the gate and a group-III face opposite the N-face, and has a larger bandgap than the III-N channel layer. The lattice constant of the first III-N barrier layer is within 0.5% of the lattice constant of the buffer layer.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/04 - Semiconductor bodies characterised by their crystalline structure, e.g. polycrystalline, cubic or particular orientation of crystalline planes

60.

Enhancement-mode III-nitride devices

      
Application Number 14714964
Grant Number 09590060
Status In Force
Filing Date 2015-05-18
First Publication Date 2015-09-17
Grant Date 2017-03-07
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Lal, Rakesh K.

Abstract

A III-N enhancement-mode transistor includes a III-N structure including a conductive channel, source and drain contacts, and a gate electrode between the source and drain contacts. An insulator layer is over the III-N structure, with a recess formed through the insulator layer in a gate region of the transistor, with the gate electrode at least partially in the recess. The transistor further includes a field plate having a portion between the gate electrode and the drain contact, the field plate being electrically connected to the source contact. The gate electrode includes an extending portion that is outside the recess and extends towards the drain contact. The separation between the conductive channel and the extending portion of the gate electrode is greater than the separation between the conductive channel and the portion of the field plate that is between the gate electrode and the drain contact.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
  • H01L 21/8252 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using III-V technology
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 27/085 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/40 - Electrodes

61.

Gate drivers for circuits based on semiconductor devices

      
Application Number 14708627
Grant Number 09362903
Status In Force
Filing Date 2015-05-11
First Publication Date 2015-09-03
Grant Date 2016-06-07
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Wu, Yifeng
  • Zhou, Liang
  • Wang, Zhan

Abstract

An electronic component includes a switching device comprising a source, a gate, and a drain, the switching device having a predetermined device switching rate. The electronic component further includes a gate driver electrically connected to the gate and coupled between the source and the gate of the switching device, the gate driver configured to switch a gate voltage of the switching device at a gate driver switching rate. The gate driver is configured such that in operation, an output current of the gate driver cannot exceed a first current level, wherein the first current level is sufficiently small to provide a switching rate of the switching device in operation to be less than the predetermined device switching rate.

IPC Classes  ?

  • H03K 3/00 - Circuits for generating electric pulsesMonostable, bistable or multistable circuits
  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/40 - Electrodes
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 21/28 - Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups
  • H01L 29/66 - Types of semiconductor device
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors

62.

Semiconductor devices with field plates

      
Application Number 14660080
Grant Number 09373699
Status In Force
Filing Date 2015-03-17
First Publication Date 2015-07-02
Grant Date 2016-06-21
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Chu, Rongming
  • Coffie, Robert

Abstract

A III-N device is described with a III-N material layer, an insulator layer on a surface of the III-N material layer, an etch stop layer on an opposite side of the insulator layer from the III-N material layer, and an electrode defining layer on an opposite side of the etch stop layer from the insulator layer. A recess is formed in the electrode defining layer. An electrode is formed in the recess. The insulator can have a precisely controlled thickness, particularly between the electrode and III-N material layer.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 21/336 - Field-effect transistors with an insulated gate
  • H01L 21/3065 - Plasma etchingReactive-ion etching
  • H01L 21/283 - Deposition of conductive or insulating materials for electrodes
  • H01L 29/12 - Semiconductor bodies characterised by the materials of which they are formed
  • H01L 21/18 - Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
  • H01L 21/285 - Deposition of conductive or insulating materials for electrodes from a gas or vapour, e.g. condensation
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/40 - Electrodes
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/872 - Schottky diodes
  • H01L 21/765 - Making of isolation regions between components by field-effect
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
  • H01L 21/306 - Chemical or electrical treatment, e.g. electrolytic etching
  • H01L 21/311 - Etching the insulating layers
  • H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 29/51 - Insulating materials associated therewith

63.

Semiconductor power modules and devices

      
Application Number 14585705
Grant Number 09224721
Status In Force
Filing Date 2014-12-30
First Publication Date 2015-05-21
Grant Date 2015-12-29
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Wu, Yifeng

Abstract

An electronic component is described which includes a first transistor encased in a first package, the first transistor being mounted over a first conductive portion of the first package, and a second transistor encased in a second package, the second transistor being mounted over a second conductive portion of the second package. The component further includes a substrate comprising an insulating layer between a first metal layer and a second metal layer. The first package is on one side of the substrate with the first conductive portion being electrically connected to the first metal layer, and the second package is on another side of the substrate with the second conductive portion being electrically connected to the second metal layer. The first package is opposite the second package, with at least 50% of a first area of the first conductive portion being opposite a second area of the second conductive portion.

IPC Classes  ?

  • H01L 25/00 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices
  • H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different subclasses of , , , , or , e.g. forming hybrid circuits
  • H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
  • H05K 1/02 - Printed circuits Details
  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H01L 23/12 - Mountings, e.g. non-detachable insulating substrates
  • H01L 23/367 - Cooling facilitated by shape of device
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
  • H01L 23/552 - Protection against radiation, e.g. light
  • H01L 23/64 - Impedance arrangements

64.

Bridge circuits and their components

      
Application Number 14539098
Grant Number 09899998
Status In Force
Filing Date 2014-11-12
First Publication Date 2015-03-12
Grant Date 2018-02-20
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Honea, James
  • Wu, Yifeng

Abstract

A half bridge is described with at least one transistor having a channel that is capable in a first mode of operation of blocking a substantial voltage in at least one direction, in a second mode of operation of conducting substantial current in one direction through the channel and in a third mode of operation of conducting substantial current in an opposite direction through the channel. The half bridge can have two circuits with such a transistor.

IPC Classes  ?

  • H03K 17/56 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices
  • H03K 17/0814 - Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit
  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H03K 17/567 - Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
  • H03K 17/22 - Modifications for ensuring a predetermined initial state when the supply voltage has been applied

65.

Semiconductor devices with guard rings

      
Application Number 14530204
Grant Number 09224805
Status In Force
Filing Date 2014-10-31
First Publication Date 2015-02-26
Grant Date 2015-12-29
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Chowdhury, Srabanti
  • Dora, Yuvaraj

Abstract

Semiconductor devices with guard rings are described. The semiconductor devices may be, e.g., transistors and diodes designed for high-voltage applications. A guard ring is a floating electrode formed of electrically conducting material above a semiconductor material layer. A portion of an insulating layer is between at least a portion of the guard ring and the semiconductor material layer. A guard ring may be located, for example, on a transistor between a gate and a drain electrode. A semiconductor device may have one or more guard rings.

IPC Classes  ?

  • H01L 29/02 - Semiconductor bodies
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/40 - Electrodes
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/872 - Schottky diodes
  • H01L 21/76 - Making of isolation regions between components
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds

66.

III-N device structures and methods

      
Application Number 14522154
Grant Number 09224671
Status In Force
Filing Date 2014-10-23
First Publication Date 2015-02-12
Grant Date 2015-12-29
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Parikh, Primit
  • Dora, Yuvaraj
  • Wu, Yifeng
  • Mishra, Umesh
  • Fichtenbaum, Nicholas
  • Lal, Rakesh K.

Abstract

A III-N device is described with a III-N layer, an electrode thereon, a passivation layer adjacent the III-N layer and electrode, a thick insulating layer adjacent the passivation layer and electrode, a high thermal conductivity carrier capable of transferring substantial heat away from the III-N device, and a bonding layer between the thick insulating layer and the carrier. The bonding layer attaches the thick insulating layer to the carrier. The thick insulating layer can have a precisely controlled thickness and be thermally conductive.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/12 - Semiconductor bodies characterised by the materials of which they are formed
  • H01L 21/18 - Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
  • H01L 23/34 - Arrangements for cooling, heating, ventilating or temperature compensation
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 29/16 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic System in uncombined form
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
  • H01L 21/48 - Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups or
  • H01L 21/762 - Dielectric regions
  • H01L 29/30 - Semiconductor bodies having polished or roughened surface
  • H01L 23/373 - Cooling facilitated by selection of materials for the device

67.

III-nitride transistor including a p-type depleting layer

      
Application Number 14327371
Grant Number 09443938
Status In Force
Filing Date 2014-07-09
First Publication Date 2015-01-22
Grant Date 2016-09-13
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Lal, Rakesh K.
  • Keller, Stacia
  • Chowdhury, Srabanti

Abstract

A transistor includes a III-N layer structure comprising a III-N channel layer between a III-N barrier layer and a p-type III-N layer. The transistor further includes a source, a drain, and a gate between the source and the drain, the gate being over the III-N layer structure. The p-type III-N layer includes a first portion that is at least partially in a device access region between the gate and the drain, and the first portion of the p-type III-N layer is electrically connected to the source and electrically isolated from the drain. When the transistor is biased in the off state, the p-type layer can cause channel charge in the device access region to deplete as the drain voltage increases, thereby leading to higher breakdown voltages.

IPC Classes  ?

  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/04 - Semiconductor bodies characterised by their crystalline structure, e.g. polycrystalline, cubic or particular orientation of crystalline planes
  • H01L 29/51 - Insulating materials associated therewith

68.

Multilevel inverters and their components

      
Application Number 14321269
Grant Number 09537425
Status In Force
Filing Date 2014-07-01
First Publication Date 2015-01-15
Grant Date 2017-01-03
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Honea, James

Abstract

A multilevel inverter includes a first half bridge in series with a second half bridge, each comprising a switch having a channel. The switch is configured to block a substantial voltage in a first direction during a first mode of operation, to conduct substantial current through the channel in the first direction during a second mode of operation, and to conduct substantial current through the channel in a second direction during a third mode of operation. During the third mode of operation, a gate of the switch is biased relative to a source of the switch at a voltage that is less than a threshold voltage of the switch. The inverter may also include a third half bridge. The inverter can be configured such that in operation, switches of the third half bridge are switched at a substantially lower frequency than the switches of the first and second half bridges.

IPC Classes  ?

  • H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
  • H02M 7/483 - Converters with outputs that each can have more than two voltage levels
  • H02M 7/487 - Neutral point clamped inverters
  • H02M 1/00 - Details of apparatus for conversion

69.

Method of forming electronic components with increased reliability

      
Application Number 14478504
Grant Number 09171836
Status In Force
Filing Date 2014-09-05
First Publication Date 2014-12-25
Grant Date 2015-10-27
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Lal, Rakesh K.
  • Coffie, Robert
  • Wu, Yifeng
  • Parikh, Primit
  • Dora, Yuvaraj
  • Mishra, Umesh
  • Chowdhury, Srabanti
  • Fichtenbaum, Nicholas

Abstract

An electronic component includes a depletion-mode transistor, an enhancement-mode transistor, and a resistor. The depletion-mode transistor has a higher breakdown voltage than the enhancement-mode transistor. A first terminal of the resistor is electrically connected to a source of the enhancement-mode transistor, and a second terminal of the resistor and a source of the depletion-mode transistor are each electrically connected to a drain of the enhancement-mode transistor. A gate of the depletion-mode transistor can be electrically connected to a source of the enhancement-mode transistor.

IPC Classes  ?

  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
  • H01L 27/02 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
  • H01L 25/00 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices
  • H01L 21/8236 - Combination of enhancement and depletion transistors
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 49/02 - Thin-film or thick-film devices
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H03K 17/10 - Modifications for increasing the maximum permissible switched voltage
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/872 - Schottky diodes
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds

70.

Package configurations for low EMI circuits

      
Application Number 14480980
Grant Number 09190295
Status In Force
Filing Date 2014-09-09
First Publication Date 2014-12-25
Grant Date 2015-11-17
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Wu, Yifeng

Abstract

An electronic component includes a high voltage switching transistor encased in a package. The high voltage switching transistor comprises a source electrode, a gate electrode, and a drain electrode all on a first side of the high voltage switching transistor. The source electrode is electrically connected to a conducting structural portion of the package. Assemblies using the abovementioned transistor with another transistor can be formed, where the source of one transistor can be electrically connected to a conducting structural portion of a package containing the transistor and a drain of the second transistor is electrically connected to the second conductive structural portion of a package that houses the second transistor. Alternatively, the source of the second transistor is electrically isolated from its conductive structural portion, and the drain of the second transistor is electrically isolated from its conductive structural portion.

IPC Classes  ?

  • H01L 21/00 - Processes or apparatus specially adapted for the manufacture or treatment of semiconductor or solid-state devices, or of parts thereof
  • H01L 21/48 - Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups or
  • H01L 23/057 - ContainersSeals characterised by the shape the container being a hollow construction and having an insulating base as a mounting for the semiconductor body the leads being parallel to the base
  • H01L 23/36 - Selection of materials, or shaping, to facilitate cooling or heating, e.g. heat sinks
  • H01L 25/11 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices having separate containers the devices being of a type provided for in subclass
  • H01L 21/77 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
  • H01L 27/02 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier

71.

Enhancement mode III-N HEMTs

      
Application Number 14464639
Grant Number 09196716
Status In Force
Filing Date 2014-08-20
First Publication Date 2014-12-11
Grant Date 2015-11-24
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Coffie, Robert
  • Shen, Likun
  • Ben-Yaacov, Ilan
  • Parikh, Primit

Abstract

A III-N semiconductor device that includes a substrate and a nitride channel layer including a region partly beneath a gate region, and two channel access regions on opposite sides of the part beneath the gate. The channel access regions may be in a different layer from the region beneath the gate. The device includes an AlXN layer adjacent the channel layer wherein X is gallium, indium or their combination, and a preferably n-doped GaN layer adjacent the AlXN layer in the areas adjacent to the channel access regions. The concentration of Al in the AlXN layer, the AlXN layer thickness and the n-doping concentration in the n-doped GaN layer are selected to induce a 2DEG charge in channel access regions without inducing any substantial 2DEG charge beneath the gate, so that the channel is not conductive in the absence of a switching voltage applied to the gate.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/36 - Semiconductor bodies characterised by the concentration or distribution of impurities
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/08 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes

72.

High voltage III-nitride semiconductor devices

      
Application Number 14262649
Grant Number 09293561
Status In Force
Filing Date 2014-04-25
First Publication Date 2014-11-20
Grant Date 2016-03-22
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Mccarthy, Lee
  • Fichtenbaum, Nicholas

Abstract

A III-N device is described has a buffer layer, a first III-N material layer on the buffer layer, a second III-N material layer on the first III-N material layer on an opposite side from the buffer layer and a dispersion blocking layer between the buffer layer and the channel layer. The first III-N material layer is a channel layer and a compositional difference between the first III-N material layer and the second III-N material layer induces a 2DEG channel in the first III-N material layer. A sheet or a distribution of negative charge at an interface of the channel layer and the dispersion blocking layer confines electrons away from the buffer layer.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
  • H01L 29/207 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds further characterised by the doping material

73.

Inductive load power switching circuits

      
Application Number 14332967
Grant Number 09690314
Status In Force
Filing Date 2014-07-16
First Publication Date 2014-11-06
Grant Date 2017-06-27
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Honea, James
  • Wu, Yifeng

Abstract

Power switching circuits including an inductive load and a switching device are described. The switches devices can be either low-side or high-side switches. Some of the switches are transistors that are able to block voltages or prevent substantial current from flowing through the transistor when voltage is applied across the transistor.

IPC Classes  ?

  • H03K 17/56 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices
  • G05F 1/70 - Regulating power factorRegulating reactive current or power
  • H03K 17/0814 - Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit

74.

Electronic devices and components for high efficiency power circuits

      
Application Number 14336287
Grant Number 09401341
Status In Force
Filing Date 2014-07-21
First Publication Date 2014-11-06
Grant Date 2016-07-26
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Wu, Yifeng

Abstract

An electronic component includes a III-N transistor and a III-N rectifying device both encased in a single package. A gate electrode of the III-N transistor is electrically connected to a first lead of the single package or to a conductive structural portion of the single package, a drain electrode of the III-N transistor is electrically connected to a second lead of the single package and to a first electrode of the III-N rectifying device, and a second electrode of the III-N rectifying device is electrically connected to a third lead of the single package.

IPC Classes  ?

  • H01L 21/00 - Processes or apparatus specially adapted for the manufacture or treatment of semiconductor or solid-state devices, or of parts thereof
  • H01L 23/00 - Details of semiconductor or other solid state devices
  • H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
  • H03K 17/567 - Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT
  • H01L 23/495 - Lead-frames
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 23/552 - Protection against radiation, e.g. light
  • H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different main groups of the same subclass of , , , , or
  • H01L 27/085 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only

75.

Semiconductor electronic components with integrated current limiters

      
Application Number 14311600
Grant Number 09171910
Status In Force
Filing Date 2014-06-23
First Publication Date 2014-10-09
Grant Date 2015-10-27
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Wu, Yifeng
  • Mishra, Umesh
  • Chowdhury, Srabanti

Abstract

An electronic component includes a high-voltage depletion-mode transistor and a low-voltage enhancement-mode transistor. A source electrode of the high-voltage depletion-mode transistor is electrically connected to a drain electrode of the low-voltage enhancement-mode transistor, and a gate electrode of the high-voltage depletion-mode transistor is electrically coupled to the source electrode of the low-voltage enhancement-mode transistor. The on-resistance of the enhancement-mode transistor is less than the on-resistance of the depletion-mode transistor, and the maximum current level of the enhancement-mode transistor is smaller than the maximum current level of the depletion-mode transistor.

IPC Classes  ?

  • H01L 27/12 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate

76.

Gate drivers for circuits based on semiconductor devices

      
Application Number 14222992
Grant Number 09059076
Status In Force
Filing Date 2014-03-24
First Publication Date 2014-10-02
Grant Date 2015-06-16
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Wu, Yifeng
  • Zhou, Liang
  • Wang, Zhan

Abstract

An electronic component includes a switching device comprising a source, a gate, and a drain, the switching device having a predetermined device switching rate. The electronic component further includes a gate driver electrically connected to the gate and coupled between the source and the gate of the switching device, the gate driver configured to switch a gate voltage of the switching device at a gate driver switching rate. The gate driver is configured such that in operation, an output current of the gate driver cannot exceed a first current level, wherein the first current level is sufficiently small to provide a switching rate of the switching device in operation to be less than the predetermined device switching rate.

IPC Classes  ?

  • H03K 3/00 - Circuits for generating electric pulsesMonostable, bistable or multistable circuits
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H01L 29/40 - Electrodes
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched

77.

Method of forming electronic components with reactive filters

      
Application Number 14307234
Grant Number 09041435
Status In Force
Filing Date 2014-06-17
First Publication Date 2014-10-02
Grant Date 2015-05-26
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Honea, James
  • Wu, Yifeng

Abstract

An electronic component comprising a half bridge adapted for operation with an electrical load having an operating frequency is described. The half bridge comprises a first switch and a second switch each having a switching frequency, the first switch and the second switch each including a first terminal, a second terminal, and a control terminal, wherein the first terminal of the first switch and the second terminal of the second switch are both electrically connected to a node. The electronic component further includes a filter having a 3 dB roll-off frequency, the 3 dB roll-off frequency being less than the switching frequency of the switches but greater than the operating frequency of the electrical load. The first terminal of the filter is electrically coupled to the node, and the 3 dB roll-off frequency of the filter is greater than 5 kHz.

IPC Classes  ?

  • H03K 3/00 - Circuits for generating electric pulsesMonostable, bistable or multistable circuits
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
  • H02M 1/12 - Arrangements for reducing harmonics from AC input or output
  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H03K 17/567 - Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT
  • H02P 7/29 - Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
  • H02M 7/5395 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation

78.

Enhancement-mode III-nitride devices

      
Application Number 13799989
Grant Number 09087718
Status In Force
Filing Date 2013-03-13
First Publication Date 2014-09-18
Grant Date 2015-07-21
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Lal, Rakesh K.

Abstract

A III-N enhancement-mode transistor includes a III-N structure including a conductive channel, source and drain contacts, and a gate electrode between the source and drain contacts. An insulator layer is over the III-N structure, with a recess formed through the insulator layer in a gate region of the transistor, with the gate electrode at least partially in the recess. The transistor further includes a field plate having a portion between the gate electrode and the drain contact, the field plate being electrically connected to the source contact. The gate electrode includes an extending portion that is outside the recess and extends towards the drain contact. The separation between the conductive channel and the extending portion of the gate electrode is greater than the separation between the conductive channel and the portion of the field plate that is between the gate electrode and the drain contact.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
  • H01L 21/8252 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using III-V technology
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 27/085 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched

79.

Method for making semiconductor diodes with low reverse bias currents

      
Application Number 14288682
Grant Number 08895423
Status In Force
Filing Date 2014-05-28
First Publication Date 2014-09-18
Grant Date 2014-11-25
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Dora, Yuvaraj

Abstract

A diode is described with a III-N material structure, an electrically conductive channel in the III-N material structure, two terminals, wherein a first terminal is an anode adjacent to the III-N material structure and a second terminal is a cathode in ohmic contact with the electrically conductive channel, and a dielectric layer over at least a portion of the anode. The anode comprises a first metal layer adjacent to the III-N material structure, a second metal layer, and an intermediary electrically conductive structure between the first metal layer and the second metal layer. The intermediary electrically conductive structure reduces a shift in an on-voltage or reduces a shift in reverse bias current of the diode resulting from the inclusion of the dielectric layer. The diode can be a high voltage device and can have low reverse bias currents.

IPC Classes  ?

  • H01L 21/28 - Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups
  • H01L 21/322 - Treatment of semiconductor bodies using processes or apparatus not provided for in groups to modify their internal properties, e.g. to produce internal imperfections
  • H01L 21/44 - Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/47 - Schottky barrier electrodes

80.

Carbon doping semiconductor devices

      
Application Number 14208304
Grant Number 09245992
Status In Force
Filing Date 2014-03-13
First Publication Date 2014-09-18
Grant Date 2016-01-26
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Keller, Stacia
  • Swenson, Brian L.
  • Fichtenbaum, Nicholas

Abstract

−2.

IPC Classes  ?

  • H01L 21/338 - Field-effect transistors with a Schottky gate
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/207 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds further characterised by the doping material

81.

Carbon doping semiconductor devices

      
Application Number 14208482
Grant Number 09245993
Status In Force
Filing Date 2014-03-13
First Publication Date 2014-09-18
Grant Date 2016-01-26
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Keller, Stacia
  • Swenson, Brian L.
  • Fichtenbaum, Nicholas

Abstract

−2.

IPC Classes  ?

  • H01L 21/338 - Field-effect transistors with a Schottky gate
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/207 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds further characterised by the doping material

82.

Electrodes for semiconductor devices and methods of forming the same

      
Application Number 14179788
Grant Number 09171730
Status In Force
Filing Date 2014-02-13
First Publication Date 2014-08-21
Grant Date 2015-10-27
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Chowdhury, Srabanti
  • Mishra, Umesh
  • Dora, Yuvaraj

Abstract

A III-N semiconductor HEMT device includes an electrode-defining layer on a III-N material structure. The electrode-defining layer has a recess with a first sidewall proximal to the drain and a second sidewall proximal to the source, each sidewall comprising a plurality of steps. A portion of the recess distal from the III-N material structure has a larger width than a portion of the recess proximal to the III-N material structure. An electrode is in the recess, the electrode including an extending portion over the first sidewall. A portion of the electrode-defining layer is between the extending portion and the III-N material structure. The first sidewall forms a first effective angle relative to the surface of the III-N material structure and the second sidewall forms a second effective angle relative to the surface of the III-N material structure, the second effective angle being larger than the first effective angle.

IPC Classes  ?

  • H01L 21/338 - Field-effect transistors with a Schottky gate
  • H01L 21/283 - Deposition of conductive or insulating materials for electrodes
  • H01L 29/40 - Electrodes
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 21/28 - Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups
  • H01L 21/768 - Applying interconnections to be used for carrying current between separate components within a device
  • H01L 21/285 - Deposition of conductive or insulating materials for electrodes from a gas or vapour, e.g. condensation
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 29/04 - Semiconductor bodies characterised by their crystalline structure, e.g. polycrystalline, cubic or particular orientation of crystalline planes
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds

83.

Transistors with isolation regions

      
Application Number 14260808
Grant Number 09147760
Status In Force
Filing Date 2014-04-24
First Publication Date 2014-08-21
Grant Date 2015-09-29
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Chowdhury, Srabanti

Abstract

A transistor device is described that includes a source, a gate, a drain, a semiconductor material which includes a gate region between the source and the drain, a plurality of channel access regions in the semiconductor material on either side of the gate, a channel in the semiconductor material having an effective width in the gate region and in the channel access regions, and an isolation region in the gate region. The isolation region serves to reduce the effective width of the channel in the gate region without substantially reducing the effective width of the channel in the access regions. Alternatively, the isolation region can be configured to collect holes that are generated in the transistor device. The isolation region may simultaneously achieve both of these functions.

IPC Classes  ?

  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/207 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds further characterised by the doping material
  • H01L 29/40 - Electrodes
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched

84.

Electrode configurations for semiconductor devices

      
Application Number 14211104
Grant Number 09142659
Status In Force
Filing Date 2014-03-14
First Publication Date 2014-07-17
Grant Date 2015-09-22
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Dora, Yuvaraj
  • Wu, Yifeng

Abstract

A III-N semiconductor device can include an electrode-defining layer having a thickness on a surface of a III-N material structure. The electrode-defining layer has a recess with a sidewall, the sidewall comprising a plurality of steps. A portion of the recess distal from the III-N material structure has a first width, and a portion of the recess proximal to the III-N material structure has a second width, the first width being larger than the second width. An electrode is in the recess, the electrode including an extending portion over the sidewall of the recess. A portion of the electrode-defining layer is between the extending portion and the III-N material structure. The sidewall forms an effective angle of about 40 degrees or less relative to the surface of the III-N material structure.

IPC Classes  ?

  • H01L 29/872 - Schottky diodes
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/16 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic System in uncombined form
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/861 - Diodes
  • H01L 21/768 - Applying interconnections to be used for carrying current between separate components within a device
  • H01L 21/283 - Deposition of conductive or insulating materials for electrodes
  • H01L 21/285 - Deposition of conductive or insulating materials for electrodes from a gas or vapour, e.g. condensation

85.

Semiconductor devices with field plates

      
Application Number 14178701
Grant Number 09111961
Status In Force
Filing Date 2014-02-12
First Publication Date 2014-06-12
Grant Date 2015-08-18
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Chu, Rongming
  • Coffie, Robert

Abstract

A III-N device is described with a III-N material layer, an insulator layer on a surface of the III-N material layer, an etch stop layer on an opposite side of the insulator layer from the III-N material layer, and an electrode defining layer on an opposite side of the etch stop layer from the insulator layer. A recess is formed in the electrode defining layer. An electrode is formed in the recess. The insulator can have a precisely controlled thickness, particularly between the electrode and III-N material layer.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 21/336 - Field-effect transistors with an insulated gate
  • H01L 21/3065 - Plasma etchingReactive-ion etching
  • H01L 21/283 - Deposition of conductive or insulating materials for electrodes
  • H01L 21/285 - Deposition of conductive or insulating materials for electrodes from a gas or vapour, e.g. condensation
  • H01L 29/40 - Electrodes
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/872 - Schottky diodes
  • H01L 21/765 - Making of isolation regions between components by field-effect
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 29/51 - Insulating materials associated therewith

86.

Gallium nitride power devices

      
Application Number 14108642
Grant Number 09343560
Status In Force
Filing Date 2013-12-17
First Publication Date 2014-04-17
Grant Date 2016-05-17
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Suh, Chang Soo
  • Mishra, Umesh

Abstract

Enhancement mode III-nitride devices are described. The 2DEG is depleted in the gate region so that the device is unable to conduct current when no bias is applied at the gate. Both gallium face and nitride face devices formed as enhancement mode devices.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/40 - Electrodes
  • H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
  • H01L 29/43 - Electrodes characterised by the materials of which they are formed

87.

Semiconductor power modules and devices

      
Application Number 14134878
Grant Number 08952750
Status In Force
Filing Date 2013-12-19
First Publication Date 2014-04-17
Grant Date 2015-02-10
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Wu, Yifeng

Abstract

An electronic component is described which includes a first transistor encased in a first package, the first transistor being mounted over a first conductive portion of the first package, and a second transistor encased in a second package, the second transistor being mounted over a second conductive portion of the second package. The component further includes a substrate comprising an insulating layer between a first metal layer and a second metal layer. The first package is on one side of the substrate with the first conductive portion being electrically connected to the first metal layer, and the second package is on another side of the substrate with the second conductive portion being electrically connected to the second metal layer. The first package is opposite the second package, with at least 50% of a first area of the first conductive portion being opposite a second area of the second conductive portion.

IPC Classes  ?

  • H03K 17/56 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices
  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
  • H05K 1/02 - Printed circuits Details
  • H01L 23/552 - Protection against radiation, e.g. light
  • H01L 23/64 - Impedance arrangements
  • H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different subclasses of , , , , or , e.g. forming hybrid circuits

88.

III-N device structures and methods

      
Application Number 14102750
Grant Number 08895421
Status In Force
Filing Date 2013-12-11
First Publication Date 2014-04-10
Grant Date 2014-11-25
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Parikh, Primit
  • Dora, Yuvaraj
  • Wu, Yifeng
  • Mishra, Umesh
  • Fichtenbaum, Nicholas
  • Lal, Rakesh K.

Abstract

A III-N device is described with a III-N layer, an electrode thereon, a passivation layer adjacent the III-N layer and electrode, a thick insulating layer adjacent the passivation layer and electrode, a high thermal conductivity carrier capable of transferring substantial heat away from the III-N device, and a bonding layer between the thick insulating layer and the carrier. The bonding layer attaches the thick insulating layer to the carrier. The thick insulating layer can have a precisely controlled thickness and be thermally conductive.

IPC Classes  ?

  • H01L 21/44 - Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups
  • H01L 47/00 - Bulk negative resistance effect devices, e.g. Gunn-effect devices; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof
  • H01L 29/66 - Types of semiconductor device
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 21/48 - Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups or
  • H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
  • H01L 29/16 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic System in uncombined form
  • H01L 23/373 - Cooling facilitated by selection of materials for the device
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds

89.

Method of forming electronic components with increased reliability

      
Application Number 14068944
Grant Number 08860495
Status In Force
Filing Date 2013-10-31
First Publication Date 2014-04-03
Grant Date 2014-10-14
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Lal, Rakesh K.
  • Coffie, Robert
  • Wu, Yifeng
  • Parikh, Primit
  • Dora, Yuvaraj
  • Mishra, Umesh
  • Chowdhury, Srabanti
  • Fichtenbaum, Nicholas

Abstract

An electronic component includes a depletion-mode transistor, an enhancement-mode transistor, and a resistor. The depletion-mode transistor has a higher breakdown voltage than the enhancement-mode transistor. A first terminal of the resistor is electrically connected to a source of the enhancement-mode transistor, and a second terminal of the resistor and a source of the depletion-mode transistor are each electrically connected to a drain of the enhancement-mode transistor. A gate of the depletion-mode transistor can be electrically connected to a source of the enhancement-mode transistor.

IPC Classes  ?

  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors

90.

Semiconductor heterostructure diodes

      
Application Number 13973890
Grant Number 09041065
Status In Force
Filing Date 2013-08-22
First Publication Date 2014-02-27
Grant Date 2015-05-26
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Wu, Yifeng
  • Mishra, Umesh
  • Parikh, Primit
  • Chu, Rongming
  • Ben-Yaacov, Ilan
  • Shen, Likun

Abstract

Planar Schottky diodes for which the semiconductor material includes a heterojunction which induces a 2DEG in at least one of the semiconductor layers. A metal anode contact is on top of the upper semiconductor layer and forms a Schottky contact with that layer. A metal cathode contact is connected to the 2DEG, forming an ohmic contact with the layer containing the 2DEG.

IPC Classes  ?

  • H01L 29/739 - Transistor-type devices, i.e. able to continuously respond to applied control signals controlled by field effect
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/872 - Schottky diodes
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched

91.

Package configurations for low EMI circuits

      
Application Number 14063438
Grant Number 08890314
Status In Force
Filing Date 2013-10-25
First Publication Date 2014-02-20
Grant Date 2014-11-18
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Wu, Yifeng

Abstract

An electronic component includes a high voltage switching transistor encased in a package. The high voltage switching transistor comprises a source electrode, a gate electrode, and a drain electrode all on a first side of the high voltage switching transistor. The source electrode is electrically connected to a conducting structural portion of the package. Assemblies using the abovementioned transistor with another transistor can be formed, where the source of one transistor can be electrically connected to a conducting structural portion of a package containing the transistor and a drain of the second transistor is electrically connected to the second conductive structural portion of a package that houses the second transistor. Alternatively, the source of the second transistor is electrically isolated from its conductive structural portion, and the drain of the second transistor is electrically isolated from its conductive structural portion.

IPC Classes  ?

  • H01L 23/34 - Arrangements for cooling, heating, ventilating or temperature compensation
  • H01L 23/057 - ContainersSeals characterised by the shape the container being a hollow construction and having an insulating base as a mounting for the semiconductor body the leads being parallel to the base
  • H01L 25/11 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices having separate containers the devices being of a type provided for in subclass
  • H01L 23/36 - Selection of materials, or shaping, to facilitate cooling or heating, e.g. heat sinks
  • H01L 27/02 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
  • H01L 21/77 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate

92.

Semiconductor electronic components and circuits

      
Application Number 14058089
Grant Number 09293458
Status In Force
Filing Date 2013-10-18
First Publication Date 2014-02-13
Grant Date 2016-03-22
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Parikh, Primit
  • Honea, James
  • Blake, Jr., Carl C.
  • Coffie, Robert
  • Wu, Yifeng
  • Mishra, Umesh

Abstract

An electronic component includes a high-voltage depletion-mode transistor and a low-voltage enhancement-mode transistor both encased in a single package. A source electrode of the high-voltage depletion-mode transistor is electrically connected to a drain electrode of the low-voltage enhancement-mode transistor, a drain electrode of the high-voltage depletion-mode transistor is electrically connected to a drain lead of the single package, a gate electrode of the low-voltage enhancement-mode transistor is electrically connected to a gate lead of the single package, a gate electrode of the high-voltage depletion-mode transistor is electrically connected to an additional lead of the single package, and a source electrode of the low-voltage enhancement-mode transistor is electrically connected to a conductive structural portion of the single package.

IPC Classes  ?

  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
  • H01L 21/8258 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using a combination of technologies covered by , , or
  • H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
  • H03K 17/567 - Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT
  • H01L 23/495 - Lead-frames
  • H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different subclasses of , , , , or , e.g. forming hybrid circuits
  • H01L 23/64 - Impedance arrangements
  • H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different main groups of the same subclass of , , , , or

93.

Semiconductor electronic components with integrated current limiters

      
Application Number 13550445
Grant Number 08803246
Status In Force
Filing Date 2012-07-16
First Publication Date 2014-01-16
Grant Date 2014-08-12
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Wu, Yifeng
  • Mishra, Umesh
  • Chowdhury, Srabanti

Abstract

An electronic component includes a high-voltage depletion-mode transistor and a low-voltage enhancement-mode transistor. A source electrode of the high-voltage depletion-mode transistor is electrically connected to a drain electrode of the low-voltage enhancement-mode transistor, and a gate electrode of the high-voltage depletion-mode transistor is electrically coupled to the source electrode of the low-voltage enhancement-mode transistor. The on-resistance of the enhancement-mode transistor is less than the on-resistance of the depletion-mode transistor, and the maximum current level of the enhancement-mode transistor is smaller than the maximum current level of the depletion-mode transistor.

IPC Classes  ?

  • H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate

94.

Semiconductor devices with integrated hole collectors

      
Application Number 13535094
Grant Number 09184275
Status In Force
Filing Date 2012-06-27
First Publication Date 2014-01-02
Grant Date 2015-11-10
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Chowdhury, Srabanti
  • Ben-Yaacov, Ilan

Abstract

Transistor devices which include semiconductor layers with integrated hole collector regions are described. The hole collector regions are configured to collect holes generated in the transistor device during operation and transport them away from the active regions of the device. The hole collector regions can be electrically connected or coupled to the source, the drain, or a field plate of the device. The hole collector regions can be doped, for example p-type or nominally p-type, and can be capable of conducting holes but not electrons.

IPC Classes  ?

  • H01L 31/0328 - Inorganic materials including, apart from doping materials or other impurities, semiconductor materials provided for in two or more of groups
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/40 - Electrodes
  • H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
  • H01L 29/207 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds further characterised by the doping material

95.

Inductive load power switching circuits

      
Application Number 13959483
Grant Number 08816751
Status In Force
Filing Date 2013-08-05
First Publication Date 2013-12-05
Grant Date 2014-08-26
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Honea, James
  • Wu, Yifeng

Abstract

Power switching circuits including an inductive load and a switching device are described. The switches devices can be either low-side or high-side switches. Some of the switches are transistors that are able to block voltages or prevent substantial current from flowing through the transistor when voltage is applied across the transistor.

IPC Classes  ?

  • H03K 17/56 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices

96.

Enhancement mode III-N HEMTs

      
Application Number 13954772
Grant Number 08841702
Status In Force
Filing Date 2013-07-30
First Publication Date 2013-11-28
Grant Date 2014-09-23
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Coffie, Robert
  • Shen, Likun
  • Ben-Yaacov, Ilan
  • Parikh, Primit

Abstract

A III-N semiconductor device that includes a substrate and a nitride channel layer including a region partly beneath a gate region, and two channel access regions on opposite sides of the part beneath the gate. The channel access regions may be in a different layer from the region beneath the gate. The device includes an AlXN layer adjacent the channel layer wherein X is gallium, indium or their combination, and a preferably n-doped GaN layer adjacent the AlXN layer in the areas adjacent to the channel access regions. The concentration of Al in the AlXN layer, the AlXN layer thickness and the n-doping concentration in the n-doped GaN layer are selected to induce a 2DEG charge in channel access regions without inducing any substantial 2DEG charge beneath the gate, so that the channel is not conductive in the absence of a switching voltage applied to the gate.

IPC Classes  ?

97.

N-polar III-nitride transistors

      
Application Number 13859635
Grant Number 09093366
Status In Force
Filing Date 2013-04-09
First Publication Date 2013-10-10
Grant Date 2015-07-28
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Mishra, Umesh
  • Chowdhury, Srabanti
  • Neufeld, Carl Joseph

Abstract

An N-polar III-N transistor includes a III-N buffer layer, a first III-N barrier layer, and a III-N channel layer, the III-N channel layer having a gate region and a plurality of access regions on opposite sides of the gate region. The compositional difference between the first III-N barrier layer and the III-N channel layer causes a conductive channel to be induced in the access regions of the III-N channel layer. The transistor also includes a source, a gate, a drain, and a second III-N barrier layer between the gate and the III-N channel layer. The second III-N barrier layer has an N-face proximal to the gate and a group-III face opposite the N-face, and has a larger bandgap than the III-N channel layer. The lattice constant of the first III-N barrier layer is within 0.5% of the lattice constant of the buffer layer.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
  • H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
  • H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
  • H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds

98.

Bridge circuits and their components

      
Application Number 13887204
Grant Number 08912839
Status In Force
Filing Date 2013-05-03
First Publication Date 2013-09-26
Grant Date 2014-12-16
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor
  • Honea, James
  • Wu, Yifeng

Abstract

A half bridge is described with at least one transistor having a channel that is capable in a first mode of operation of blocking a substantial voltage in at least one direction, in a second mode of operation of conducting substantial current in one direction through the channel and in a third mode of operation of conducting substantial current in an opposite direction through the channel. The half bridge can have two circuits with such a transistor.

IPC Classes  ?

  • H03K 17/56 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices
  • H03K 17/22 - Modifications for ensuring a predetermined initial state when the supply voltage has been applied
  • H03K 17/16 - Modifications for eliminating interference voltages or currents
  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
  • H03K 17/567 - Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT
  • H03K 17/0814 - Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit

99.

Package configurations for low EMI circuits

      
Application Number 13873855
Grant Number 08592974
Status In Force
Filing Date 2013-04-30
First Publication Date 2013-09-12
Grant Date 2013-11-26
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Wu, Yifeng

Abstract

An electronic component includes a high voltage switching transistor encased in a package. The high voltage switching transistor comprises a source electrode, a gate electrode, and a drain electrode all on a first side of the high voltage switching transistor. The source electrode is electrically connected to a conducting structural portion of the package. Assemblies using the abovementioned transistor with another transistor can be formed, where the source of one transistor can be electrically connected to a conducting structural portion of a package containing the transistor and a drain of the second transistor is electrically connected to the second conductive structural portion of a package that houses the second transistor. Alternatively, the source of the second transistor is electrically isolated from its conductive structural portion, and the drain of the second transistor is electrically isolated from its conductive structural portion.

IPC Classes  ?

  • H01L 23/34 - Arrangements for cooling, heating, ventilating or temperature compensation

100.

Semiconductor power modules and devices

      
Application Number 13405041
Grant Number 08648643
Status In Force
Filing Date 2012-02-24
First Publication Date 2013-08-29
Grant Date 2014-02-11
Owner TRANSPHORM TECHNOLOGY, INC. (USA)
Inventor Wu, Yifeng

Abstract

An electronic component is described which includes a first transistor encased in a first package, the first transistor being mounted over a first conductive portion of the first package, and a second transistor encased in a second package, the second transistor being mounted over a second conductive portion of the second package. The component further includes a substrate comprising an insulating layer between a first metal layer and a second metal layer. The first package is on one side of the substrate with the first conductive portion being electrically connected to the first metal layer, and the second package is on another side of the substrate with the second conductive portion being electrically connected to the second metal layer. The first package is opposite the second package, with at least 50% of a first area of the first conductive portion being opposite a second area of the second conductive portion.

IPC Classes  ?

  • H03K 17/56 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices
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