Dialog Semiconductor Inc.

United States of America

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IPC Class
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only 157
H02M 1/00 - Details of apparatus for conversion 79
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters 47
H05B 33/08 - Circuit arrangements for operating electroluminescent light sources 47
H05B 37/02 - Controlling 27
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NICE Class
09 - Scientific and electric apparatus and instruments 5
11 - Environmental control apparatus 3
42 - Scientific, technological and industrial services, research and design 3
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1.

In-circuit detection of early failure of power switch transistors in switching power converters

      
Application Number 17579308
Grant Number 12126253
Status In Force
Filing Date 2022-01-19
First Publication Date 2023-07-20
Grant Date 2024-10-22
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor Liu, Wenduo

Abstract

A failure detection circuit for a power switch transistor in a power switching converter is provided that compares a drive voltage for driving a gate of the power switch transistor to a plurality of thresholds. Based upon when the drive voltage crosses each threshold in the plurality of thresholds, a logic circuit determines whether a fault condition exists for the power switch transistor.

IPC Classes  ?

  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H03K 17/18 - Modifications for indicating state of switch

2.

Power converter with adaptive active clamp

      
Application Number 17445719
Grant Number 11637499
Status In Force
Filing Date 2021-08-23
First Publication Date 2023-02-23
Grant Date 2023-04-25
Owner Dialog Semiconductor Inc. (USA)
Inventor Zhang, Xiaoyong

Abstract

An active-clamp flyback converter is provided with improved active-clamp switch control that switches on an active-clamp switch at an active-clamp switch on-time that equals a power switch on-time minus a peak charge time for an active-clamp capacitor. The peak charge time is the duration between the switching off of the power switch transistor and when the charging current through the active-clamp capacitor falls to zero. The controller measures this peak charge time following the switching off of the power switch transistor and then applies it to the subsequent switching on of the active-clamp switch so that the active-clamp switch is switched on at the power switch on-time minus the peak charge time.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/34 - Snubber circuits

3.

High-side synchronous rectifier driver with reduced controller power supply charging efficiency and reduced EMI

      
Application Number 17375954
Grant Number 11817790
Status In Force
Filing Date 2021-07-14
First Publication Date 2023-01-19
Grant Date 2023-11-14
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Feng, Guang
  • Kong, Pengju
  • Liu, Xiyuan
  • Zong, Qingqing

Abstract

A flyback converter is provided that includes a high-side synchronous rectifier switch transistor. A secondary-side synchronous rectifier controller powered by a power supply voltage controls a cycling on and off of the high-side synchronous rectifier switch transistor. An active control of the charging of the power supply voltage uses an auxiliary capacitor that is charged from a charge source while a power switch transistor in a first switching state. When the power switch transistor is in a second switching state that is the complement of the first switching state, the active control coupes the auxiliary capacitor to a power supply capacitor that stores the power supply voltage.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters

4.

Switching power converter with secondary-side control

      
Application Number 17363889
Grant Number 11863079
Status In Force
Filing Date 2021-06-30
First Publication Date 2023-01-05
Grant Date 2024-01-02
Owner Dialog Semiconductor Inc. (USA)
Inventor Zhang, Xiaoyong

Abstract

A flyback converter with secondary-side control includes a secondary-side controller configured to emulate a primary-winding current. Based upon the emulated primary-winding current, the secondary-side controller signals a primary-side controller through at least one isolation capacitor to switch off a power switch transistor.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H02M 1/00 - Details of apparatus for conversion

5.

Adaptive gate drive for a power switch transistor in a switching power converter

      
Application Number 17145186
Grant Number 11689095
Status In Force
Filing Date 2021-01-08
First Publication Date 2022-07-14
Grant Date 2023-06-27
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Liu, Wenduo
  • Gong, Huangxuan
  • Kanagala, Vijay
  • Bui, Hien

Abstract

A gate drive control circuit is provided that charges a gate voltage of a power switch transistor during a power switch transistor on-time period. During a first portion of the on-time period, the gate drive control circuit charges the gate voltage through a relatively-low resistance. During a second portion of the on-time period, the gate drive control circuit charges the gate voltage through a relatively-high resistance. Finally, during a third portion of the on-time period, the gate drive control circuit charges the gate voltage through another relatively-low resistance.

IPC Classes  ?

  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
  • H03K 17/042 - Modifications for accelerating switching by feedback from the output circuit to the control circuit
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

6.

Flyback converter with auxiliary winding voltage sensing referring to capacitor voltage

      
Application Number 17142167
Grant Number 11532991
Status In Force
Filing Date 2021-01-05
First Publication Date 2022-07-07
Grant Date 2022-12-20
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Liu, Wenduo
  • Yun, Heng

Abstract

An auxiliary winding for a flyback converter includes a floating terminal coupled to ground through a diode. A primary-side controller has a power supply voltage terminal coupled to a remaining terminal of the auxiliary winding and has a voltage sense terminal coupled to the floating terminal.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a 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
  • H02M 1/00 - Details of apparatus for conversion

7.

Primary-side controller for hybrid secondary-side regulation

      
Application Number 17578353
Grant Number 11955895
Status In Force
Filing Date 2022-01-18
First Publication Date 2022-05-05
Grant Date 2024-04-09
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Li, Yong
  • Zheng, Cong
  • Wang, Xiaoyan
  • Liu, Wenduo

Abstract

A flyback converter control architecture is provided in which primary-only feedback techniques are used to ensure smooth startup and detection of fault conditions. During steady-state operation, secondary-side regulation is employed. In addition, current limits are monitored during steady-state operation using primary-only feedback techniques to obviate the need for a secondary-side current sense resistor.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H02M 1/36 - Means for starting or stopping converters
  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02M 1/00 - Details of apparatus for conversion

8.

Power adapter having ultra low standby power

      
Application Number 17020635
Grant Number 11527962
Status In Force
Filing Date 2020-09-14
First Publication Date 2022-03-17
Grant Date 2022-12-13
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Kong, Pengju
  • Liu, Wenduo
  • Lin, Yong Xiong

Abstract

A standby power system for a flyback converter is disclosed. The flyback converter includes a primary-side, a secondary-side, an output terminal at the secondary-side, and a secondary-side controller, where the output terminal is configured to electrically connect to a load. The standby power system comprises a comparator at the secondary-side, an opto-coupler in signal communication with the primary-side, the secondary-side, and the comparator, and a cable detach detector (or load detector). The cable detach detector is configured to determine whether a device is electrically connected to the flyback converter through a charging cable and to set the flyback converter into a standby mode if the deice is disconnected from the charging cable.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H03K 5/24 - Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude
  • G01R 19/165 - Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
  • H04B 10/80 - Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups , e.g. optical power feeding or optical transmission through water
  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02J 7/06 - Regulation of the charging current or voltage using discharge tubes or semiconductor devices
  • H03K 17/795 - 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 opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors
  • H02M 1/00 - Details of apparatus for conversion

9.

Isolated switching power converter with data communication between primary and secondary sides

      
Application Number 16917768
Grant Number 11527961
Status In Force
Filing Date 2020-06-30
First Publication Date 2021-12-30
Grant Date 2022-12-13
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Feng, Guang
  • Kong, Pengju
  • Yao, Jianming

Abstract

An isolated switching power converter having a primary-side and secondary-side in signal communication with an input and an output is disclosed. The isolated switching power converter comprises a transformer, primary-side switch, secondary-side switch, primary-side controller, and secondary-side controller. The transformer includes a primary-winding and a secondary-winding in signal communication with the input and output. The primary-side switch is in signal communication with the primary-winding and the secondary-side switch is in signal communication with the secondary-winding. The primary-side controller is on the primary-side and the secondary-side controller is on the secondary-side. The primary-side controller is configured to output a control signal for operating the primary-side switch and the secondary-side controller configured to monitor a voltage across the secondary-side switch, output a control signal for switching the secondary-side switch, and turn-off the secondary-side switch at an off-time of the primary-side switch to transmit a data signal to the primary-side controller.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H04B 3/02 - Line transmission systems Details
  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H04W 88/02 - Terminal devices

10.

Adaptive gate regulation for a synchronous rectifier flyback converter

      
Application Number 17151028
Grant Number 11621646
Status In Force
Filing Date 2021-01-15
First Publication Date 2021-12-02
Grant Date 2023-04-04
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Zong, Qingqing
  • Chen, Yimin
  • Liu, Mengfei
  • Kong, Pengju

Abstract

A flyback converter is provided that dynamically adjusts a drain threshold voltage for a current cycle of a synchronous rectifier switch transistor based upon operating conditions in a previous cycle of the synchronous rectifier switch transistor. A differential amplifier drives a gate voltage of the synchronous rectifier switch transistor during an on-time of the current cycle so that a drain voltage of the synchronous rectifier switch transistor equals the drain threshold voltage during a regulated portion of the current cycle.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/00 - Details of apparatus for conversion

11.

Flyback converter with synchronous rectifier switch fault detection

      
Application Number 16888021
Grant Number 11394303
Status In Force
Filing Date 2020-05-29
First Publication Date 2021-12-02
Grant Date 2022-07-19
Owner Dialog Semiconductor, Inc. (USA)
Inventor
  • Chen, Yimin
  • Yoon, Juyoung
  • Zhang, Jiandong
  • Nguyen, David
  • Yao, Jianming

Abstract

A flyback converter is provided that compares a drain-to-source voltage of a synchronous rectifier switch transistor to a negative threshold voltage to detect whether the synchronous rectifier switch transistor has a partially-open or an open fault condition. The flyback converter also compares a gate terminal voltage of a gate driver to the synchronous rectifier switch transistor to a positive threshold voltage to detect whether the synchronous rectifier switch transistor has a gate open or a gate short-circuit fault condition.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/36 - Means for starting or stopping converters
  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H03K 5/24 - Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude

12.

Flyback converter with fast load transient detection

      
Application Number 16888437
Grant Number 11736026
Status In Force
Filing Date 2020-05-29
First Publication Date 2021-12-02
Grant Date 2023-08-22
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Liu, Mengfei
  • Chen, Yimin
  • Nguyen, David
  • Yoon, Juyoung
  • Li, Tao
  • Feng, Guang
  • Chin, Kai-Wen
  • Lin, Yong Xiong
  • Yao, Jianming

Abstract

A flyback converter is provided that detects a load-transient-produced increase in the output current to more quickly detect and respond to the load transient.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H03F 3/45 - Differential amplifiers
  • G01R 19/165 - Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
  • H03K 5/24 - Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude
  • H04B 10/80 - Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups , e.g. optical power feeding or optical transmission through water
  • H03K 17/78 - 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 opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
  • H03M 1/00 - Analogue/digital conversionDigital/analogue conversion
  • H02M 1/00 - Details of apparatus for conversion

13.

Adaptive gate regulation for a synchronous rectifier flyback converter

      
Application Number 16888466
Grant Number 11323017
Status In Force
Filing Date 2020-05-29
First Publication Date 2021-12-02
Grant Date 2022-05-03
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Zong, Qingqing
  • Chen, Yimin
  • Liu, Mengfei
  • Kong, Pengju

Abstract

A flyback converter is provided that dynamically adjusts a drain threshold voltage for a current cycle of a synchronous rectifier switch transistor based upon operating conditions in a previous cycle of the synchronous rectifier switch transistor. A differential amplifier drives a gate voltage of the synchronous rectifier switch transistor during an on-time of the current cycle so that a drain voltage of the synchronous rectifier switch transistor equals the drain threshold voltage during a regulated portion of the current cycle.

IPC Classes  ?

  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H03K 5/24 - Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H03K 5/00 - Manipulation of pulses not covered by one of the other main groups of this subclass

14.

Universal output current regulation for a flyback converter

      
Application Number 16853575
Grant Number 11223283
Status In Force
Filing Date 2020-04-20
First Publication Date 2021-10-21
Grant Date 2022-01-11
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Zheng, Cong
  • Liu, Wenduo
  • Bui, Hien

Abstract

Disclosed is a universal primary-only output current regulation for a flyback converter. A controller determines a peak sense resistor voltage responsive to a desired average output current for the flyback converter during a continuous conduction mode of operation. After a power switch transistor is cycled on, the controller monitors a sense resistor voltage to determine when the sense resistor voltage equals the peak sense resistor voltage. The controller switches off the power switch transistor when the sense resistor voltage equals the peak sense resistor voltage to maintain an average output current for the flyback converter equal to the desired average output current.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters

15.

Short circuit and soft short protection for data interface charging

      
Application Number 17342495
Grant Number 11946979
Status In Force
Filing Date 2021-06-08
First Publication Date 2021-09-23
Grant Date 2024-04-02
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Yao, Jianming
  • Chin, Kai-Wen
  • Li, Yong
  • Zheng, Cong
  • Nguyen, David
  • Shi, Fuqiang

Abstract

A switching power converter is provided that communicates with a mobile device to receive a value of a load detection current. The switching power converter adjusts the cycling of a power switch until a constant current mode of operation is entered with a known output current driving the mobile device. The switching power converter subtracts the load current from the output current to measure a soft-short circuit current.

IPC Classes  ?

  • G01R 31/50 - Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
  • G01R 31/52 - Testing for short-circuits, leakage current or ground faults
  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

16.

System for turning off a synchronous rectifier based on a primary switch turn-on detection

      
Application Number 16784108
Grant Number 11601061
Status In Force
Filing Date 2020-02-06
First Publication Date 2021-08-12
Grant Date 2023-03-07
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Kong, Pengju
  • Zong, Qingqing

Abstract

Out.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/00 - Details of apparatus for conversion

17.

System and method for determining a primary switching event in an isolated converter

      
Application Number 16779459
Grant Number 11223284
Status In Force
Filing Date 2020-01-31
First Publication Date 2021-08-05
Grant Date 2022-01-11
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Xu, Kuangzhe
  • Kong, Pengju
  • Zhang, Jiandong
  • Bui, Hien

Abstract

TH).

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

18.

Universal input voltage detection system for a flyback converter

      
Application Number 16835167
Grant Number 11081965
Status In Force
Filing Date 2020-03-30
First Publication Date 2021-08-03
Grant Date 2021-08-03
Owner DIALOG SEMICONDUCTOR INC (USA)
Inventor
  • Zheng, Cong
  • Yao, Jianming
  • Xin, Pan
  • Guo, Jing

Abstract

Disclosed is a universal input voltage detection system for a flyback converter having a transformer coupled between an input and an output of the flyback converter. The transformer includes a primary winding coupled to the input of the flyback converter to receive an input voltage and a secondary winding coupled to the output of the flyback converter. The universal input voltage detection system comprises a controller, coupled to a switch, at a primary winding side of the transformer. The switch is coupled to the primary winding of the transformer and a current through the primary winding is generated when the switch is turned on. The controller is configured to operate in either continuous conduction mode (CCM) or discontinuous conduction mode (DCM) and indirectly detect the input voltage to the flyback converter based on the current through the primary winding generated while the switch is turned on.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

19.

Light load detector circuit for inductive DC-DC converter

      
Application Number 16504675
Grant Number 10958174
Status In Force
Filing Date 2019-07-08
First Publication Date 2021-03-23
Grant Date 2021-03-23
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Singh, Manmeet
  • Gallina, Pietro
  • Pagano, Rosario
  • Choudhary, Vijay
  • Parasuram, Vivek
  • Kesterson, John

Abstract

A power converter and method to detect a light load condition at an output of the power converter are presented. The power converter may have an inductor and a resistive element connected between an input of the power converter and an input of the inductor. The power converter may have a first chopping unit to generate a chopped voltage signal at an output of said first chopping unit, wherein the chopped voltage signal is generated by chopping an inductor voltage at the input of said inductor based on a duty cycle of the power converter. The power converter may have a reference current source, wherein the reference current source and a replica resistive element are arranged in series. The power converter may have a comparator unit to generate, based on the reference potential and based on the chopped voltage signal, a signal indicative of said light load condition.

IPC Classes  ?

  • 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 1/00 - Details of apparatus for conversion

20.

Switching power converter with improved power factor correction via feedback signal averaging

      
Application Number 16548629
Grant Number 11063510
Status In Force
Filing Date 2019-08-22
First Publication Date 2021-02-25
Grant Date 2021-07-13
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Ping, Laiqing
  • Wang, Xiaoyan
  • Shi, Nan

Abstract

The feedback loop of a switching power converter controller is provided with an averaging circuit that averages either an output voltage, an error signal, or a control voltage. Regardless of which feedback signal is averaged, the averaging occurs over a first cycle of a rectified input voltage to form an averaged signal that is used by the feedback loop in a subsequent cycle of the rectified input voltage.

IPC Classes  ?

  • 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
  • H02M 1/00 - Details of apparatus for conversion
  • H02M 1/14 - Arrangements for reducing ripples from DC input or output

21.

Flyback converter with edge-based isolated communication

      
Application Number 17064533
Grant Number 11588409
Status In Force
Filing Date 2020-10-06
First Publication Date 2021-01-21
Grant Date 2023-02-21
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Liu, Wenduo
  • Yang, Kun
  • Ping, Laiqing

Abstract

A flyback converter communication channel is provided that comprises a pair of capacitors. A transmitter on a first side of a transformer for the flyback converter transmits a transmitter signal over a first one of the capacitors. The transmitter also transmits a complement of the transmitter signal over a second one of the capacitors. A receiver on a second side of the transformer controls a switch transistor responsive to a high-pass-filtered difference of the received signals from the pair of capacitors.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H03K 19/20 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits

22.

Flyback converter with improved dynamic load response

      
Application Number 16903138
Grant Number 11309801
Status In Force
Filing Date 2020-06-16
First Publication Date 2020-12-31
Grant Date 2022-04-19
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Kong, Pengju
  • Li, Tao
  • Yoon, Juyoung

Abstract

A secondary-side control loop for a flyback converter is provided that generates a secondary-side control signal during normal operation using a compensator. In periods of significant load changes, the compensator is bypassed so that the secondary-side control signal is generated as an open-loop signal.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a 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 1/00 - Details of apparatus for conversion

23.

Flyback converter input voltage detection

      
Application Number 16911344
Grant Number 11139745
Status In Force
Filing Date 2020-06-24
First Publication Date 2020-12-31
Grant Date 2021-10-05
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Yao, Jianming
  • Liu, Mengfei
  • Liu, Wenduo

Abstract

A flyback converter is disclosed that times a detection time for each cycle of a power switch transistor. The detection time ends when a sense resistor voltage exceeds a threshold voltage. Over a half cycle of an AC input voltage to the flyback converter measures a series of detection time and determines a minimum detection time from the series of detection times. If the minimum detection time exceeds a brownout delay, a brownout condition exists. If the minimum detection time is less than an overvoltage delay, an overvoltage condition exists.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • G01R 19/165 - Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters

24.

FLYBACK CONVERTER WITH IMPROVED DYNAMIC LOAD RESPONSE

      
Application Number US2020039456
Publication Number 2020/264050
Status In Force
Filing Date 2020-06-24
Publication Date 2020-12-30
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Kong, Pengju
  • Li, Tao
  • Yoon, Juyoung

Abstract

A secondary-side control loop for a flyback converter is provided that generates a secondary-side control signal during normal operation using a compensator. In periods of significant load changes, the compensator is bypassed so that the secondary-side control signal is generated as an open-loop signal.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/00 - Details of apparatus for conversion

25.

FLYBACK CONVERTER INPUT VOLTAGE DETECTION

      
Application Number US2020039661
Publication Number 2020/264189
Status In Force
Filing Date 2020-06-25
Publication Date 2020-12-30
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Yao, Jianming
  • Liu, Mengfei
  • Liu, Wenduo

Abstract

A flyback converter is disclosed that times a detection time for each cycle of a power switch transistor. The detection time ends when a sense resistor voltage exceeds a threshold voltage. Over a half cycle of an AC input voltage to the flyback converter measures a series of detection time and determines a minimum detection time from the series of detection times. If the minimum detection time exceeds a brownout delay, a brownout condition exists. If the minimum detection time is less than an overvoltage delay, an overvoltage condition exists.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 7/12 - 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
  • H02M 1/00 - Details of apparatus for conversion

26.

Adaptive zero voltage switching control

      
Application Number 16903204
Grant Number 11437916
Status In Force
Filing Date 2020-06-16
First Publication Date 2020-12-24
Grant Date 2022-09-06
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Zheng, Cong
  • Liu, Wenduo
  • Yao, Jianming

Abstract

A flyback converter is disclosed that includes an auxiliary switch controller that adaptively controls the auxiliary switch for improved zero voltage switching. The auxiliary switch control adaptively adjusts the auxiliary switch on-time period responsive to a transformer reset time for the flyback converter, a resonant oscillation period for a power switch terminal voltage for a power switch transistor, and an on-time period for the power switch transistor to provide the improved zero voltage switching.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/00 - Details of apparatus for conversion

27.

Optocoupler current transfer ratio compensation

      
Application Number 16428771
Grant Number 10958177
Status In Force
Filing Date 2019-05-31
First Publication Date 2020-12-03
Grant Date 2021-03-23
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Li, Tao
  • Kong, Pengju
  • Yoon, Juyoung
  • Zong, Qingqing

Abstract

A flyback converter is disclosed having a secondary side controller that generates an input current for an optocoupler diode by driving a variable resistor with a control voltage. The secondary side controller varies a variable resistance for the variable resistor to compensate for current transfer ratio gain variations for the optocoupler.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

28.

Dynamic discharge current control for improving power supply output regulation

      
Application Number 16563770
Grant Number 10855187
Status In Force
Filing Date 2019-09-06
First Publication Date 2020-12-01
Grant Date 2020-12-01
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Chen, Yimin
  • Liu, Mengfei
  • Yao, Jianming

Abstract

A flyback converter controller is provided with secondary-side controller that adjusts a discharge current form an output voltage rail during a communication period with a primary-side controller to maintain the output voltage within regulation.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/00 - Details of apparatus for conversion

29.

Slave interface for a DALI network

      
Application Number 16880721
Grant Number 11234318
Status In Force
Filing Date 2020-05-21
First Publication Date 2020-11-26
Grant Date 2022-01-25
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Liu, Wenduo
  • Yang, Kun

Abstract

A DALI interface is provided that includes a digital isolator having an input terminal and an output terminal. A DALI bus controlled by a master device controls a binary voltage state of a voltage rail. A DFET couples between the input terminal and the output terminal to control a voltage of the input terminal responsive to the control of the DALI bus by the master device. The digital isolator responds to the control of the input terminal voltage to drive a digital signal through an isolation barrier to control a voltage of the output terminal to control a slave lighting device.

IPC Classes  ?

  • H05B 47/18 - Controlling the light source by remote control via data-bus transmission
  • H05B 45/37 - Converter circuits
  • H05B 45/395 - Linear regulators
  • H04L 29/08 - Transmission control procedure, e.g. data link level control procedure

30.

System and method for improving power factor and THD of a switching power converter

      
Application Number 16544789
Grant Number 10848056
Status In Force
Filing Date 2019-08-19
First Publication Date 2020-11-24
Grant Date 2020-11-24
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Xu, Naidong
  • Ping, Laiqing
  • Shi, Nan

Abstract

A system for improving a power factor (PF) of a power converter in signal communication with a rectifier and an electromagnetic interference capacitor is disclosed. The system includes a controller and a threshold detector. The threshold detector is configured to measure and compare a rectified voltage against a threshold voltage and the controller is configured to set the power converter to a stop-mode. The power converter is set to the stop-mode at a stop-time that is less than a first zero-crossing time. The controller is further configured to set the power converter to a run-mode at a time that is past the first zero-crossing time.

IPC Classes  ?

  • H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
  • 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 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
  • 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 1/00 - Details of apparatus for conversion

31.

Multi-mode control for multi-output voltage power converter

      
Application Number 16450473
Grant Number 10811978
Status In Force
Filing Date 2019-06-24
First Publication Date 2020-10-20
Grant Date 2020-10-20
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Zheng, Cong
  • Guo, Jing
  • Chen, Chien-Liang

Abstract

An adaptive pulse width modulation threshold is provided for a flyback converter that controls the transition between the pulse frequency mode of operation and the pulse width modulation mode of operation. The adaptive pulse width modulation mode is adapted responsive to an output voltage for the flyback converter.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

32.

Switching power converter with adaptive pulse frequency modulation

      
Application Number 16547345
Grant Number 10770968
Status In Force
Filing Date 2019-08-21
First Publication Date 2020-09-08
Grant Date 2020-09-08
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Ping, Laiqing
  • Shi, Nan
  • Wang, Xiaoyan

Abstract

An adaptive pulse frequency modulation for a switching power converter is provided that varies the switching frequency across a cycle of a rectified input voltage for the switching power converter From a beginning of the cycle of the rectified input voltage, the switching frequency decreases from a maximum value to a minimum value at a mid-point of the cycle and then increases from the mid-point back to the maximum value at an end of the cycle.

IPC Classes  ?

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

33.

Flyback converter with edge-based isolated communication

      
Application Number 16276475
Grant Number 10797608
Status In Force
Filing Date 2019-02-14
First Publication Date 2020-08-20
Grant Date 2020-10-06
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Liu, Wenduo
  • Yang, Kun
  • Ping, Laiqing

Abstract

A flyback converter communication channel is provided that comprises a pair of capacitors. A transmitter on a first side of a transformer for the flyback converter transmits a transmitter signal over a first one of the capacitors. The transmitter also transmits a complement of the transmitter signal over a second one of the capacitors. A receiver on a second side of the transformer controls a switch transistor responsive to a high-pass-filtered difference of the received signals from the pair of capacitors.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H03K 19/20 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits

34.

Flyback converter with output current calibration

      
Application Number 16215302
Grant Number 10666150
Status In Force
Filing Date 2018-12-10
First Publication Date 2020-05-26
Grant Date 2020-05-26
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Chin, Kai-Wen
  • Yao, Jianming
  • Nguyen, David
  • Li, Tao

Abstract

An output current calibration is disclosed to increase the accuracy and precision of the constant-current mode for a flyback converter.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H01M 10/44 - Methods for charging or discharging
  • H02M 1/00 - Details of apparatus for conversion

35.

Flyback converter with reliable pulse-based isolated communication

      
Application Number 16369548
Grant Number 10651752
Status In Force
Filing Date 2019-03-29
First Publication Date 2020-05-12
Grant Date 2020-05-12
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Liu, Wenduo
  • Yang, Kun

Abstract

An isolated switching power converter communication channel is provided that comprises a pair of capacitors. A transmitter on a first side of a transformer for the converter transmits a transmitter signal over a first one of the capacitors. The transmitter also transmits a complement of the transmitter signal over a second one of the capacitors. A receiver on a second side of the transformer recovers a signal responsive to a high-pass-filtered difference of the received signals from the pair of capacitors.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/00 - Details of apparatus for conversion

36.

Adaptive startup for switching power converter

      
Application Number 16182507
Grant Number 10848054
Status In Force
Filing Date 2018-11-06
First Publication Date 2020-05-07
Grant Date 2020-11-24
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Yu, Jiang
  • Feng, Guang
  • Sha, Qiu
  • Shi, Qifeng
  • Yao, Jianming

Abstract

A switching power supply controller for a switching power supply is provided that measures an input voltage through an application of a load during an input voltage measurement period following connection of the switching power supply to an AC mains. Based upon the measured input voltage, the controller adjusts a start-up delay period so that the start-up delay period is substantially constant despite variations in an AC line voltage for the AC mains.

IPC Classes  ?

  • H02M 1/36 - Means for starting or stopping converters

37.

Adaptive control for zero-voltage switching in a multi-switch switching power converter

      
Application Number 16735069
Grant Number 11626803
Status In Force
Filing Date 2020-01-06
First Publication Date 2020-05-07
Grant Date 2023-04-11
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Liu, Wenduo
  • Zheng, Cong
  • Wang, Xiaoyan
  • Kong, Pengju

Abstract

A switching power converter is provided that adaptively changes the on-time period for an auxiliary switch transistor to locate a boundary between sufficient and insufficient energy.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/00 - Details of apparatus for conversion
  • H02M 3/00 - Conversion of DC power input into DC power output

38.

USB data pin impedance detection

      
Application Number 16735582
Grant Number 10983152
Status In Force
Filing Date 2020-01-06
First Publication Date 2020-05-07
Grant Date 2021-04-20
Owner
  • DIALOG SEMICONDUCTOR INC. (USA)
  • DIALOG INTEGRATED CIRCUITS (TIANJIN) LIMITED (China)
Inventor
  • Shi, Fuqiang
  • Yao, Jianming
  • Huang, Weihai
  • Li, Yong
  • Kesterson, John William

Abstract

A device for determining impedance at a data pin of a communication interface. In one embodiment, the device includes a current source configured to selectively inject a test current to the data pin. The device also includes a sensing circuit for sensing a first test voltage corresponding to a voltage at the data pin without the test current injected, and a second test voltage corresponding to another voltage at the data pin with the test current injected. The sensing circuit determines the impedance at the data pin based on the first test voltage and the second test voltage.

IPC Classes  ?

  • G01R 27/14 - Measuring resistance by measuring current or voltage obtained from a reference source
  • G01R 31/50 - Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
  • G01R 31/68 - Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
  • G01R 31/66 - Testing of connections, e.g. of plugs or non-disconnectable joints

39.

Hybrid secondary-side regulation

      
Application Number 16588854
Grant Number 10855188
Status In Force
Filing Date 2019-09-30
First Publication Date 2020-01-30
Grant Date 2020-12-01
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Li, Yong
  • Zheng, Cong
  • Wang, Xiaoyan
  • Liu, Wenduo

Abstract

A flyback converter control architecture is provided in which primary-only feedback techniques are used to ensure smooth startup and detection of fault conditions. During steady-state operation, secondary-side regulation is employed. In addition, current limits are monitored during steady-state operation using primary-only feedback techniques to obviate the need for a secondary-side current sense resistor.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/36 - Means for starting or stopping converters
  • H02M 1/00 - Details of apparatus for conversion
  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

40.

Boot strap capacitor charging for switching power converters

      
Application Number 16024659
Grant Number 10742121
Status In Force
Filing Date 2018-06-29
First Publication Date 2020-01-02
Grant Date 2020-08-11
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Liu, Wenduo
  • Zheng, Cong

Abstract

A first charging path is provided for the charging of an a bootstrap capacitor that stores a driver power supply voltage for driving an active clamp switch transistor in a flyback converter. The first charging path couples charge from an active clamp capacitor to charge the bootstrap capacitor. A power supply capacitor stores a power supply voltage for a controller of a power switch for the flyback converter. A second charging path couples charge from the power supply capacitor to charge the bootstrap capacitor.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/00 - Details of apparatus for conversion
  • H02M 1/34 - Snubber circuits

41.

Adaptive synchronous rectifier sensing deglitch

      
Application Number 16559471
Grant Number 10797610
Status In Force
Filing Date 2019-09-03
First Publication Date 2019-12-26
Grant Date 2020-10-06
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Kong, Pengju
  • Li, Tao
  • Bui, Hien
  • Liang, Wenbo
  • Zhang, Hanguang

Abstract

A synchronous rectifier controller method is provided for controlling the on and off periods of a synchronous rectifier (SR) switch transistor in a switching power converter. The method includes a first step of monitoring an unfiltered to control whether the SR switch transistor is turned on during a first part of a power switch cycle. The method also includes a second step of monitoring a filtered SR switch signal to control whether the SR switch is turned on during a remaining second part of the power switch cycle.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H03K 5/1252 - Suppression or limitation of noise or interference

42.

Flyback converter with output voltage calibration

      
Application Number 16215469
Grant Number 10483857
Status In Force
Filing Date 2018-12-10
First Publication Date 2019-11-19
Grant Date 2019-11-19
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Yao, Jianming
  • Chin, Kai-Wen
  • Nguyen, David
  • Li, Tao

Abstract

An output voltage calibration circuit and technique is disclosed to increase the accuracy and precision of the constant-voltage mode for a flyback converter.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/00 - Details of apparatus for conversion

43.

Flyback converter controller with single pin detection of over-voltage and auxiliary winding faults

      
Application Number 16119108
Grant Number 10483861
Status In Force
Filing Date 2018-08-31
First Publication Date 2019-11-19
Grant Date 2019-11-19
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Feng, Guang
  • Yu, Jiang
  • Shi, Qifeng
  • Sha, Qiu
  • Gao, Xiaolin
  • Lin, Yong Xiong

Abstract

A flyback converter controller is provided with a single terminal through which the flyback converter controller senses for over-voltage faults for an input voltage and also senses for open circuit faults for an auxiliary winding. A first voltage divider provides a divided version of the input voltage to the single terminal. The controller compares a voltage for the single terminal to at least one over-voltage threshold to detect the over-voltage fault for the input voltage.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/36 - Means for starting or stopping converters

44.

Improving THD for a direct AC LED lighting device

      
Application Number 15927899
Grant Number 10624162
Status In Force
Filing Date 2018-03-21
First Publication Date 2019-09-26
Grant Date 2020-04-14
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Shi, Nan
  • Li, Haiju

Abstract

A direct AC LED lighting device is provided with a variable current source and a controller. The controller controls the variable current source to conduct a THD compensation current while an LED string in the direct AC lighting device is not conducting to improve power factor and reduce the THD.

IPC Classes  ?

  • H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
  • H02M 1/12 - Arrangements for reducing harmonics from AC input or output
  • H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters

45.

Thermal de-rating for a multi-mode switching power converter

      
Application Number 16421091
Grant Number 10554121
Status In Force
Filing Date 2019-05-23
First Publication Date 2019-09-12
Grant Date 2020-02-04
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Li, Yong
  • Brown, Scott
  • Liu, Mengfei
  • Chen, Yimin

Abstract

A switching power converter is disclosed that communicates a thermal alarm to a mobile device over a data channel in a data cable for charging the mobile device.

IPC Classes  ?

  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters

46.

Dimmer multi-fire to increase direct AC LED device efficiency

      
Application Number 15954554
Grant Number 10405392
Status In Force
Filing Date 2018-04-16
First Publication Date 2019-09-03
Grant Date 2019-09-03
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Shi, Nan
  • Li, Haiju

Abstract

A direct AC LED lighting device is provided with a controller that switches off a bleeder circuit following an initial rising edge for a post diode bridge voltage. The controller measures a first delay between a zero crossing for the post diode bridge voltage and the initial rising edge to estimate a triggering voltage for a leading edge dimmer switch. The controller determines a second delay following the initial rising edge responsive to the estimate of the triggering voltage. The controller may thus switch on the bleeder circuit at an expiration of the second delay so that bleeder circuit is only on for a duration sufficient to develop a voltage difference across the leading edge dimmer switch to equal the triggering voltage just as the post diode bridge voltage satisfies an LED threshold voltage.

IPC Classes  ?

  • H05B 33/08 - Circuit arrangements for operating electroluminescent light sources

47.

Adaptive control for zero-voltage switching in a multi-switch switching power converter

      
Application Number 15876054
Grant Number 10530260
Status In Force
Filing Date 2018-01-19
First Publication Date 2019-07-25
Grant Date 2020-01-07
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Liu, Wenduo
  • Zheng, Cong
  • Wang, Xiaoyan
  • Kong, Pengju

Abstract

A switching power converter is provided that adaptively changes the on-time period for an auxiliary switch transistor to locate a boundary between sufficient and insufficient energy.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/00 - Details of apparatus for conversion

48.

Input voltage detection for flyback converter

      
Application Number 15809682
Grant Number 11075584
Status In Force
Filing Date 2017-11-10
First Publication Date 2019-05-16
Grant Date 2021-07-27
Owner
  • Dialog Semiconductor Inc. (USA)
  • Dialog Semiconductor (UK) Limited (United Kingdom)
Inventor
  • Zheng, Jun
  • Yao, Jianming
  • Chen, Yimin
  • Guo, Huaming
  • Luo, Zhaowu

Abstract

A switch detection circuit is provided that senses the voltage on a rectifying component for rectifying a secondary winding current through a secondary winding of a flyback converter's transformer to determine whether a power switch transistor attached to a primary winding of the transformer has ceased cycling.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02M 1/36 - Means for starting or stopping converters
  • H02M 1/32 - Means for protecting converters other than by automatic disconnection

49.

Reducing jitter in a direct AC LED lighting device

      
Application Number 15947674
Grant Number 10292226
Status In Force
Filing Date 2018-04-06
First Publication Date 2019-05-14
Grant Date 2019-05-14
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Shi, Nan
  • Li, Haiju

Abstract

A direct AC LED lighting device is provided with a low-pass filter for filtering a threshold time in which a post diode bridge voltage exceeds an LED threshold voltage during a current AC half cycle for the post diode bridge voltage.

IPC Classes  ?

  • H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
  • H05B 37/02 - Controlling
  • H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
  • H02M 7/219 - 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 in a bridge configuration

50.

Circuit for driving a power switch

      
Application Number 15719997
Grant Number 10298112
Status In Force
Filing Date 2017-09-29
First Publication Date 2019-04-04
Grant Date 2019-05-21
Owner
  • Dialog Semiconductor, Inc. (USA)
  • Dialog Semiconductor (UK) Limited (United Kingdom)
Inventor
  • Knoedgen, Horst
  • Nagl, Christoph
  • Jelaca, Nebojsa
  • Yang, Kun
  • Choi, Jung Woo

Abstract

A circuit for driving a power switch is presented. The circuit includes a first power switch coupled to a second power switch via a switching node and a driver coupled to the first power switch, where the driver contains an energy storing element coupled to the switching node. The circuit also contains a sensor to sense an electrical parameter of the driver and a charger coupled to the sensor. The charger provides a charge current to charge the energy storage element, and to control the charge current based on the electrical parameter. In particular, a circuit for driving a power switch based on a III/V semiconductor is presented. In addition, a method of powering a power switch driver is presented. The method includes sensing an electrical parameter of the driver and adjusting a current to charge the energy storing element based on the electrical parameter.

IPC Classes  ?

  • H02M 1/096 - 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 the power supply of the control circuit being connected in parallel to the main switching element
  • 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 3/337 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H03K 17/567 - Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT

51.

On-chip tuneable diffusion resistor

      
Application Number 15839898
Grant Number 10249769
Status In Force
Filing Date 2017-12-13
First Publication Date 2019-04-02
Grant Date 2019-04-02
Owner Dialog Semiconductor, Inc. (USA)
Inventor Daley, Douglas

Abstract

An object of the disclosure is to take a CMOS varactor structure (NMOS in N-well or PMOS in P-well) and turn it in to a three terminal on-chip tuneable diffusion resistor. The diffusion resistor can be made with an n+ diffusion inside the p-substrate, or with a p+ diffusion inside an N-well that lies within the p-substrate. The resistor can be implemented in any existing CMOS or BICMOS silicon technology, without using additional masks. The resistor can be also implemented in a technology with FINFETs.

IPC Classes  ?

  • H03L 5/00 - Automatic control of voltage, current, or power
  • H01L 29/8605 - Resistors with PN junction
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • 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
  • H03H 9/00 - Networks comprising electromechanical or electro-acoustic elementsElectromechanical resonators
  • H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate

52.

Controlling output voltage to achieve ultra-low standby power in dim-to-off LED applications

      
Application Number 16044455
Grant Number 10375780
Status In Force
Filing Date 2018-07-24
First Publication Date 2019-03-28
Grant Date 2019-08-06
Owner
  • DIALOG SEMICONDUCTOR (UK) LIMITED (United Kingdom)
  • DIALOG SEMICONDUCTOR, INC. (USA)
Inventor
  • Ye, Zhiqiu
  • Gao, Xiaolin
  • Wang, Nailong
  • Deng, Guanglai
  • Niu, Yichuan

Abstract

An electronic device is provided that includes an integrated circuit (IC) configured to regulate an output voltage for powering a light emitting diode (LED). A first transistor is configured to be switched on or off by the IC to inductively couple or decouple a main power supply bus voltage from a primary winding of a transformer to a secondary winding of the transformer connectable to the LED. A second transistor is coupled between the IC and the main power supply bus voltage, and configured to be switched on or off by the IC to selectively provide an IC power supply input voltage to the IC.

IPC Classes  ?

  • H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
  • H05B 37/02 - Controlling
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/00 - Details of apparatus for conversion

53.

Single stage power converter with power factor correction

      
Application Number 16162205
Grant Number 10536083
Status In Force
Filing Date 2018-10-16
First Publication Date 2019-03-21
Grant Date 2020-01-14
Owner Dialog Semiconductor Inc. (USA)
Inventor Gao, Xiaolin

Abstract

Systems, methods, and apparatus for a circuit with power factor correction (PFC) are disclosed. In one or more embodiments, the disclosed method comprises providing, by a single-stage power converter, a delay in phase between a peak current command and a rectified input voltage such that a phase of a transformer current intentionally lags behind a phase of the rectified input voltage to maintain a power factor (PF) level and a total harmonic distortion (THD) level for the single-stage power converter. In one or more analog embodiments, a resistor and a capacitor are implemented into a conventional single-stage power converter to provide the delay in phase between the peak current command and the rectified input voltage. In one or more digital embodiments, a controller within a conventional single-stage power converter exclusively provides the delay in phase between the peak current command and the rectified input voltage.

IPC Classes  ?

  • H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H05B 41/285 - Arrangements for protecting lamps or circuits against abnormal operating conditions
  • 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
  • H05B 37/02 - Controlling
  • H05B 33/08 - Circuit arrangements for operating electroluminescent light sources

54.

Valley and peak detection for switching power converter

      
Application Number 15966497
Grant Number 10666152
Status In Force
Filing Date 2018-04-30
First Publication Date 2019-02-21
Grant Date 2020-05-26
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Jun, Henry
  • Wang, Chuanyang

Abstract

A switching power converter is provided with a phase-shifting RC network for phase-shifting a divided version of a drain voltage of a power switch transistor into a phase-shifted voltage. A comparator compares the phase-shifted voltage to a DC bias voltage to detect peaks and valleys during resonant oscillations of the drain voltage of the power switch transistor.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • G01R 1/40 - Modifications of instruments to indicate the maximum or the minimum value reached in a time interval, e.g. by maximum indicator pointer
  • G01R 19/04 - Measuring peak values of AC or of pulses
  • G01R 19/175 - Indicating the instants of passage of current or voltage through a given value, e.g. passage through zero
  • H02M 1/00 - Details of apparatus for conversion

55.

Adaptive synchronous rectifier sensing deglitch

      
Application Number 16115426
Grant Number 10418911
Status In Force
Filing Date 2018-08-28
First Publication Date 2019-01-03
Grant Date 2019-09-17
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Kong, Pengju
  • Li, Tao
  • Bui, Hien
  • Liang, Wenbo
  • Zhang, Hanguang

Abstract

A synchronous rectifier controller for controlling the on and off periods of a synchronous rectifier switch transistor in a switching power converter. In particular, the synchronous rectifier controller is configured to adaptively enable and disable a deglitch filter for filtering a turn-on signal for the synchronous rectifier switch transistor. In this fashion, the synchronous rectifier switch transistor may be switched on more rapidly during periods when the deglitch filter is disabled for greater efficiency yet the switching power converter is protected by the deglitch filter when it is not disabled.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H03K 5/1252 - Suppression or limitation of noise or interference

56.

AC line detection and X capacitor discharge using a single terminal

      
Application Number 15906959
Grant Number 10170975
Status In Force
Filing Date 2018-02-27
First Publication Date 2019-01-01
Grant Date 2019-01-01
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Feng, Guang
  • Shi, Qifeng
  • Yu, Jiang
  • Sha, Qiu
  • Lin, Yong Xiong

Abstract

A controller for a switching power converter is provided with a single detection pin through which the controller monitors whether the switching power converter is connected to an AC mains. Should a voltage for the detection pin indicate that the switching power converter is disconnected from the AC mains, the controller asserts the detection pin voltage to trigger a bleeder circuit to discharge an X class capacitor.

IPC Classes  ?

  • H02M 1/12 - Arrangements for reducing harmonics from AC input or output
  • H02J 3/24 - Arrangements for preventing or reducing oscillations of power in networks
  • H02M 5/293 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC 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 5/12 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using transformers for conversion of voltage or current amplitude only

57.

Dimmable single-stage power converter with adaptive switching frequency control

      
Application Number 15713415
Grant Number 10172197
Status In Force
Filing Date 2017-09-22
First Publication Date 2019-01-01
Grant Date 2019-01-01
Owner
  • DIALOG SEMICONDUCTOR, INC. (USA)
  • DIALOG SEMICONDUCTOR (UK) LIMITED (United Kingdom)
Inventor
  • Gao, Xiaolin
  • Ye, Zhiqiu
  • Wang, Nailong

Abstract

ipk) falls below a predetermined low limit value. Further, the method comprises operating the controller in skip mode, while reducing the switching frequency from the second switching frequency level, until a minimum dimming duty-ratio level.

IPC Classes  ?

  • H05B 33/08 - Circuit arrangements for operating electroluminescent light sources

58.

Sense resistor fault detection

      
Application Number 16044470
Grant Number 10868466
Status In Force
Filing Date 2018-07-24
First Publication Date 2018-12-20
Grant Date 2020-12-15
Owner
  • DIALOG SEMICONDUCTOR INC (USA)
  • DIALOG SEMICONDUCTOR (UK) LIMITED (United Kingdom)
Inventor
  • Zhang, Xiaoyong
  • Kronmuller, Frank
  • Zhang, Jiandong
  • Chen, Lijie
  • Wang, Honglai
  • Chen, Yimin

Abstract

A power system and related methods provide sense resistor fault detection and safe operation of switching power converters and connected devices such as portable electronic devices powered by the switching power converter. The power system detects an open circuit or short circuit condition of the sense resistor and controls output current of the switching power converter to ensure safe operating conditions of the power system and connected equipment. The power system can also detect initial inrush current of the connected equipment and detect a duty cycle of the switching power converter to positively detect a short circuit condition of the sense resistor.

IPC Classes  ?

  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02H 7/12 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers
  • H02M 1/00 - Details of apparatus for conversion
  • H02H 3/04 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned

59.

Hybrid secondary-side regulation

      
Application Number 16100934
Grant Number 10461646
Status In Force
Filing Date 2018-08-10
First Publication Date 2018-12-06
Grant Date 2019-10-29
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Li, Yong
  • Zheng, Cong
  • Wang, Xiaoyan
  • Liu, Wenduo

Abstract

A flyback converter control architecture is provided in which primary-only feedback techniques are used to ensure smooth startup and detection of fault conditions. During steady-state operation, secondary-side regulation is employed. In addition, current limits are monitored during steady-state operation using primary-only feedback techniques to obviate the need for a secondary-side current sense resistor.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H02M 1/36 - Means for starting or stopping converters
  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02M 1/00 - Details of apparatus for conversion

60.

High efficiency flicker attenuator for lighting

      
Application Number 15645845
Grant Number 10129939
Status In Force
Filing Date 2017-07-10
First Publication Date 2018-11-13
Grant Date 2018-11-13
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Zhang, Chenglong
  • Shi, Nan

Abstract

Systems, devices, and methods for dimming of solid state lighting reduce ripple and flicker at low load dimming levels (low LED current, lower light levels) yet provide full power to the load at high load dimming levels (high LED current, higher light levels) thereby reducing power loss compared to conventional dimming techniques. When dimming to lower light levels a flicker resisting metal oxide semiconductor field effect transistor (MOSFET) connected to the LED operates in linear mode such that the relationship of its drain-source voltage to the LED current is resistive to provide flicker reduction. Conversely, at higher light levels the flicker resisting MOSFET is operated in saturation mode such that full power is supplied to the LED as flicker reduction is less needed. The disclosed techniques also reduce undershoot and overshoot of the LED voltage during transitions in dimming control from high to low and low to high respectively.

IPC Classes  ?

  • H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
  • H05B 37/02 - Controlling

61.

Smart grouping control method for power converter switching noise management

      
Application Number 16012723
Grant Number 10389253
Status In Force
Filing Date 2018-06-19
First Publication Date 2018-10-18
Grant Date 2019-08-20
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Shi, Fuqiang
  • Chin, Kai-Wen
  • Zheng, Cong
  • Yao, Jianming
  • Li, Yong

Abstract

A switching power converter is provided that cycles a power switch during a group pulse mode of operation to produce a train of pulses within a group period responsive to a control voltage being within a group mode control voltage range. Depending upon the control voltage, the number of pulses in each train of pulses is varied to provide a linear power delivery to the load.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/00 - Details of apparatus for conversion

62.

Single-stage power converter with power factor correction

      
Application Number 15712024
Grant Number 10103636
Status In Force
Filing Date 2017-09-21
First Publication Date 2018-10-16
Grant Date 2018-10-16
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor Gao, Xiaolin

Abstract

Systems, methods, and apparatus for a circuit with power factor correction (PFC) are disclosed. In one or more embodiments, the disclosed method comprises providing, by a single-stage power converter, a delay in phase between a peak current command and a rectified input voltage such that a phase of a transformer current intentionally lags behind a phase of the rectified input voltage to maintain a power factor (PF) level and a total harmonic distortion (THD) level for the single-stage power converter. In one or more analog embodiments, a resistor and a capacitor are implemented into a conventional single-stage power converter to provide the delay in phase between the peak current command and the rectified input voltage. In one or more digital embodiments, a controller within a conventional single-stage power converter exclusively provides the delay in phase between the peak current command and the rectified input voltage.

IPC Classes  ?

  • H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H05B 41/285 - Arrangements for protecting lamps or circuits against abnormal operating conditions
  • 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

63.

Auxiliary winding ground fault detection for isolated DC/DC converter

      
Application Number 15986712
Grant Number 10917018
Status In Force
Filing Date 2018-05-22
First Publication Date 2018-09-20
Grant Date 2021-02-09
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Kong, Pengju
  • Doan, Duc
  • Shi, Fuqiang

Abstract

A flyback converter is provided with a controller that is configured to analyze the reflected feedback voltage waveforms to determine the presence of a ground connection fault for the auxiliary winding.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/00 - Details of apparatus for conversion

64.

LED driver with comprehensive fault protections

      
Application Number 15976177
Grant Number 10448480
Status In Force
Filing Date 2018-05-10
First Publication Date 2018-09-13
Grant Date 2019-10-15
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Liang, Enzhu
  • Wang, Yuwen
  • Gu, Ming

Abstract

The embodiments disclosed herein describe a set of fault detection circuits for LED circuits in an LED channel. A first fault detection circuit is configured to detect a short fault across one or more LEDs. A second fault detection circuit is configured to detect an open fault across an LED. A third fault detection circuit is configured to detect a short across an LED channel transistor. A fourth fault detection circuit is configured to detect an LED channel sense resistor open fault. A fifth fault detection circuit is configured to detect if the LED channel is being intentionally unused. These fault detect circuits can be implemented in a fault detection integrated circuit coupled to the LED channel.

IPC Classes  ?

  • H05B 37/00 - Circuit arrangements for electric light sources in general
  • H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
  • G01R 31/44 - Testing lamps

65.

Adaptive synchronous rectifier sensing deglitch

      
Application Number 15640315
Grant Number 10063159
Status In Force
Filing Date 2017-06-30
First Publication Date 2018-08-28
Grant Date 2018-08-28
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Kong, Pengju
  • Li, Tao
  • Bui, Hien
  • Liang, Wenbo
  • Zhang, Hanguang

Abstract

A synchronous rectifier controller for controlling the on and off periods of a synchronous rectifier switch transistor in a switching power converter. In particular, the synchronous rectifier controller is configured to adaptively enable and disable a deglitch filter for filtering a turn-on signal for the synchronous rectifier switch transistor. In this fashion, the synchronous rectifier switch transistor may be switched on more rapidly during periods when the deglitch filter is disabled for greater efficiency yet the switching power converter is protected by the deglitch filter when it is not disabled.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H03K 5/1252 - Suppression or limitation of noise or interference

66.

THERMAL DE-RATING FOR A MULTI-MODE SWITCHING POWER CONVERTER

      
Application Number US2018017875
Publication Number 2018/148686
Status In Force
Filing Date 2018-02-12
Publication Date 2018-08-16
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Li, Yong
  • Brown, Scott
  • Liu, Mengfei
  • Chen, Yimin

Abstract

A switching power converter is disclosed that communicates a thermal alarm to a mobile device over a data channel in a data cable for charging the mobile device.

IPC Classes  ?

  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

67.

Regulated power supply voltage and triac hold-up current for a switching power converter

      
Application Number 15948713
Grant Number 10237931
Status In Force
Filing Date 2018-04-09
First Publication Date 2018-08-09
Grant Date 2019-03-19
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor Zhang, Chenglong

Abstract

A switching power converter is provided that includes a current source that controls the charging of a storage capacitor to provide a regulated internal power supply voltage.

IPC Classes  ?

  • H02M 1/00 - Details of apparatus for conversion
  • H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
  • 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

68.

Efficient power supply voltage regulation for synchronous rectifier controller

      
Application Number 15943996
Grant Number 10199951
Status In Force
Filing Date 2018-04-03
First Publication Date 2018-08-09
Grant Date 2019-02-05
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Kong, Pengju
  • Wang, Xiaye
  • Liang, Wenbo
  • Yao, Jianming

Abstract

A flyback converter is provided with a synchronous rectifier (SR) controller including a pulse linear regulator (PLR) charging path and an LDO charging path. The SR controller is configured to monitor the switching period and/or duty cycle of a power switch in the flyback converter to select between the PLR and LDO charging paths.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/00 - Details of apparatus for conversion

69.

Synchronous rectifier control with adaptive minimum off-time

      
Application Number 15413042
Grant Number 10079548
Status In Force
Filing Date 2017-01-23
First Publication Date 2018-07-26
Grant Date 2018-09-18
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Kong, Pengju
  • Bui, Hien
  • Zhang, Hanguang

Abstract

A switching power converter may include a power switch coupled to a primary winding of a transformer, and a primary controller configured to turn on and off the power switch, a synchronous rectifier switch coupled to a secondary winding of a transformer, and a synchronous rectifier controller configured to turn on and off the synchronous rectifier switch. The synchronous rectifier controller may monitor a voltage across the synchronous rectifier switch. The synchronous rectifier controller may determine a period of a resonant oscillation of the voltage across the synchronous rectifier switch following at least one cycling off of the synchronous rectifier switch. The synchronous rectifier controller may adjust the minimum off-time period for the synchronous rectifier switch based on the period of the resonant oscillation. The synchronous rectifier controller may adaptively adjust a minimum off-time period for the synchronous rectifier switch.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/00 - Details of apparatus for conversion

70.

Controlling output voltage to achieve ultra-low standby power in dim-to-off LED applications

      
Application Number 15713540
Grant Number 10034336
Status In Force
Filing Date 2017-09-22
First Publication Date 2018-07-24
Grant Date 2018-07-24
Owner
  • DIALOG SEMICONDUCTOR (UK) LIMITED (United Kingdom)
  • DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Ye, Zhiqiu
  • Gao, Xiaolin
  • Wang, Nailong
  • Deng, Guanglai
  • Niu, Yichuan

Abstract

An electronic that includes an integrated circuit (IC) configured to regulate an output voltage for powering a light emitting diode (LED). A first transistor is configured to be switched on or off by the IC to inductively couple or decouple a main power supply bus voltage from a primary winding of a transformer to a secondary winding of the transformer connectable to the LED. A second transistor is coupled between the IC and the main power supply bus voltage, and configured to be switched on or off by the IC to selectively provide an IC power supply input voltage to the IC.

IPC Classes  ?

  • H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
  • H05B 37/02 - Controlling
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/00 - Details of apparatus for conversion

71.

Secondary controller for a flyback converter including a sense resistor fault detection

      
Application Number 15627253
Grant Number 10033285
Status In Force
Filing Date 2017-06-19
First Publication Date 2018-07-24
Grant Date 2018-07-24
Owner
  • DIALOG SEMICONDUCTOR INC. (USA)
  • DIALOG SEMICONDUCTOR (UK) LIMITED (United Kingdom)
Inventor
  • Zhang, Xiaoyong
  • Kronmuller, Frank
  • Zhang, Jiandong
  • Chen, Lijie
  • Wang, Honglai
  • Chen, Yimin

Abstract

A power system and related methods provide sense resistor fault detection and safe operation of switching power converters and connected devices such as portable electronic devices powered by the switching power converter. The power system detects an open circuit or short circuit condition of the sense resistor and controls output current of the switching power converter to ensure safe operating conditions of the power system and connected equipment. The power system can also detect initial inrush current of the connected equipment and detect a duty cycle of the switching power converter to positively detect a short circuit condition of the sense resistor.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02H 7/12 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers
  • H02M 1/00 - Details of apparatus for conversion

72.

Active startup timing control at fault mode

      
Application Number 15683326
Grant Number 10084370
Status In Force
Filing Date 2017-08-22
First Publication Date 2018-07-19
Grant Date 2018-09-25
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Feng, Guang
  • Kong, Pengju
  • Chin, Kai-Wen
  • Peng, Mingsheng

Abstract

A power switch transistor for a switching power converter is maintained on during a re-startup period by a zener breakdown voltage following a fault condition for the switching power converter. A source voltage from the power switch transistor is used to charge a VCC capacitor that stores a power supply voltage for a controller for the switching power converter.

IPC Classes  ?

  • H02M 1/36 - Means for starting or stopping converters
  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

73.

Frequency hopping for reducing switching power converter noise

      
Application Number 15920354
Grant Number 10560025
Status In Force
Filing Date 2018-03-13
First Publication Date 2018-07-19
Grant Date 2020-02-11
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Shi, John
  • Kesterson, John
  • Zheng, Cong
  • Chin, Kai-Wen

Abstract

A switching power converter is configured to control switching noise by implementing a plurality of pulse width modulation modes of operation. The peak current in each pulse width modulation mode of operation is controlled so that an output power for the switching power converter is continuous with regard to transitions between the pulse width modulation modes.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
  • H02M 1/12 - Arrangements for reducing harmonics from AC input or output

74.

Dual stage Vcc charging for switched mode power supply

      
Application Number 15406564
Grant Number 10075063
Status In Force
Filing Date 2017-01-13
First Publication Date 2018-07-19
Grant Date 2018-09-11
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Peng, Mingsheng
  • Malinin, Andrey
  • Kong, Pengju
  • Sha, Qiu
  • Feng, Guang

Abstract

A startup circuit is provided for establishing the Vcc voltage level of a switching power converter. The startup circuit uses a switch controller and path switching transistor to provide a two-stage Vcc capacitor charging that reduces startup time while avoiding short circuit damage through the alternate usage of a high impedance charging path and a low-impedance charging path.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/36 - Means for starting or stopping converters
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/00 - Details of apparatus for conversion

75.

Low-power and compact voltage sensing circuit

      
Application Number 15406651
Grant Number 10281505
Status In Force
Filing Date 2017-01-13
First Publication Date 2018-07-19
Grant Date 2019-05-07
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Sha, Qiu
  • Malinin, Andrey
  • Shi, Qifeng
  • Peng, Mingsheng

Abstract

A voltage sensing circuit for a switching power converter includes a comparator having a comparator input stage that processes a voltage from a main DAC and a current from a tracking DAC.

IPC Classes  ?

  • G01R 19/257 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques using analogue/digital converters of the type with comparison of different reference values with the value of voltage or current, e.g. using step-by-step method
  • H03K 5/24 - Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude
  • H03M 1/68 - Digital/analogue converters with conversions of different sensitivity, i.e. one conversion relating to the more significant digital bits and another conversion to the less significant bits
  • H03M 1/74 - Simultaneous conversion

76.

Line ripple compensation for switching power converters

      
Application Number 15406534
Grant Number 10116161
Status In Force
Filing Date 2017-01-13
First Publication Date 2018-07-19
Grant Date 2018-10-30
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Chin, Kai-Wen
  • Shi, Fuqiang
  • Kong, Pengju
  • Nguyen, David

Abstract

A line ripple compensation technique is provided for a switching power converter operating in both a pulse frequency mode of operation and a pulse width modulation mode of operation.

IPC Classes  ?

  • H02M 1/14 - Arrangements for reducing ripples from DC input or output
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/00 - Details of apparatus for conversion

77.

HYBRID SECONDARY-SIDE REGULATION

      
Application Number US2018013655
Publication Number 2018/132761
Status In Force
Filing Date 2018-01-12
Publication Date 2018-07-19
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Li, Yong
  • Zheng, Cong
  • Wang, Xiaoyan
  • Liu, Wenduo

Abstract

A flyback converter control architecture is provided in which primary-only feedback techniques are used to ensure smooth startup and detection of fault conditions. During steady-state operation, secondary-side regulation is employed. In addition, current limits are monitored during steady-state operation using primary-only feedback techniques to obviate the need for a secondary-side current sense resistor.

IPC Classes  ?

  • H02M 3/28 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02M 3/00 - Conversion of DC power input into DC power output
  • H02M 3/325 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal

78.

Communication interface

      
Application Number 15405151
Grant Number 10135686
Status In Force
Filing Date 2017-01-12
First Publication Date 2018-07-12
Grant Date 2018-11-20
Owner
  • DIALOG SEMICONDUCTOR, INC. (USA)
  • DIALOG SEMICONDUCTOR (UK) LIMITED (United Kingdom)
Inventor
  • Laisne, Michael
  • Eason, Mark
  • Von Staudt, Hans Martin

Abstract

An interface for communicating between two device is provided that includes an interface input for receiving an input signal as well as a comparator circuit coupled to the interface input. The comparator circuit is adapted to provide a clock signal and a data signal based on the input signal to a first memory device having a first input for receiving the data signal and a second input for receiving the clock signal.

IPC Classes  ?

79.

Sense resistor short detection for switching power converters

      
Application Number 15399658
Grant Number 10720846
Status In Force
Filing Date 2017-01-05
First Publication Date 2018-07-05
Grant Date 2020-07-21
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Feng, Guang
  • Kong, Pengju
  • Yoon, Juyoung

Abstract

Systems, devices, and methods are provided to enable power converters to use two or more sensing elements to reliably detect a short circuit (or soft-short circuit) existing in the power converter and distinguish these conditions from other operating conditions, such as low voltage conditions or normal operating conditions. The disclosed embodiments enable the accurate detection of fault conditions, such as short circuits or soft short conditions, using a number of sensing elements, such as sense resistors and the inherent resistance of switching devices, while preventing the detection of false positives due to other factors such as low input voltage.

IPC Classes  ?

  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H02M 1/00 - Details of apparatus for conversion

80.

Feedback scheme for non-isolated power supply

      
Application Number 15628420
Grant Number 10153695
Status In Force
Filing Date 2017-06-20
First Publication Date 2018-06-07
Grant Date 2018-12-11
Owner Dialog Semiconductor Inc. (USA)
Inventor Malinin, Andrey B.

Abstract

Embodiments described herein describe a switching power converter that includes a switch, an inductor, a diode, and a controller that generates a control signal to turn on and turn off the switch. The controller generates the control signal by generating a reference signal, integrating a difference between a voltage value of the generated reference signal, and a voltage difference between voltage values of the switching node and the second output terminal, and generating the control signal by processing the integrated voltage difference.

IPC Classes  ?

  • 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 1/00 - Details of apparatus for conversion
  • G01R 31/40 - Testing power supplies
  • G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof

81.

Pulse frequency modulation mode transitions for single stage power converter

      
Application Number 15401498
Grant Number 09985532
Status In Force
Filing Date 2017-01-09
First Publication Date 2018-05-29
Grant Date 2018-05-29
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Yoon, Juyoung
  • Shi, Fuqiang

Abstract

A switching power converter controller is provided that transitions between constant voltage pulse frequency modulation operation and constant current operation responsive to a comparison of a peak voltage for the constant voltage pulse frequency modulation operation and a peak voltage for the constant current operation.

IPC Classes  ?

  • H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
  • H02M 7/5383 - 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 self-oscillating arrangement
  • H02M 1/00 - Details of apparatus for conversion
  • H02M 7/757 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output with possibility of reversal 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 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters

82.

Single stage switching power converter with improved primary only feedback

      
Application Number 15831213
Grant Number 10020743
Status In Force
Filing Date 2017-12-04
First Publication Date 2018-04-12
Grant Date 2018-07-10
Owner
  • DIALOG SEMICONDUCTOR INC. (USA)
  • DIALOG SEMICONDUCTOR (UK) LIMITED (United Kingdom)
Inventor
  • Ye, Zhiqiu
  • Wang, Nailong
  • Chen, Yimin
  • Gao, Xiaolin

Abstract

A switching power converter is provided that extrapolates from a reference voltage during dead periods of a rectified input voltage as determined from a comparison of an Isense voltage to a current threshold.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/00 - Details of apparatus for conversion

83.

Adjusting color temperature in a dimmable LED lighting system

      
Application Number 15838293
Grant Number 10187950
Status In Force
Filing Date 2017-12-11
First Publication Date 2018-04-12
Grant Date 2019-01-22
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Yan, Liang
  • Zheng, Junjie

Abstract

A LED lighting system, such as a dimmable LED lamp, that may simulate the performance of an incandescent bulb. LED strings of different colors may be connected to the output of a single LED driver that regulates an overall intensity of light produced by the LED lighting system. The color of the LED lighting system may be controlled by circuitry, such as one or more switches, that allocates current between the LED strings to change the color temperature of light emitted by the LED lighting system as the light intensity changes.

IPC Classes  ?

  • H05B 33/08 - Circuit arrangements for operating electroluminescent light sources

84.

Switching power converter with magnetizing current shaping

      
Application Number 15824927
Grant Number 10148170
Status In Force
Filing Date 2017-11-28
First Publication Date 2018-03-29
Grant Date 2018-12-04
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Feng, Guang
  • Wang, Xiaoyan
  • Shi, Nan

Abstract

A switching power converter is provided that uses at least two peak current thresholds. In particular, the switching power converter clamps a desired peak current to not fall below a low peak current threshold value while a rectified input voltage is decreasing and to not fall below a high peak current threshold value subsequent to zero crossing times for an AC input voltage.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
  • 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
  • H03K 5/08 - Shaping pulses by limiting, by thresholding, by slicing, i.e. combined limiting and thresholding
  • H02M 1/00 - Details of apparatus for conversion

85.

Power converter with multiple output voltage levels and related methods

      
Application Number 15826591
Grant Number 09998014
Status In Force
Filing Date 2017-11-29
First Publication Date 2018-03-22
Grant Date 2018-06-12
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Yao, Jianming
  • Shi, Fuqiang

Abstract

A variable-level flyback power converter is configured to provide an accurate output voltage at various regulation levels. The variable-level flyback power converter may include a switch coupled to a secondary winding of a transformer, a diode coupled to a primary winding of the transformer, and a controller coupled to the switch. The controller may scale an initial reference voltage based on a desired output voltage and a forward voltage drop across the diode, compare the scaled reference voltage with a feedback voltage sensed at an auxiliary winding of the transformer to generate an error signal, and modulate a pulse signal provided to the switch based on the error voltage.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

86.

Switching power converter with zero current at startup

      
Application Number 15823464
Grant Number 10180697
Status In Force
Filing Date 2017-11-27
First Publication Date 2018-03-22
Grant Date 2019-01-15
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor Peng, Mingsheng

Abstract

A switching power converter is provided with a power-on-reset (POR) circuit that discharges essentially no current until a power supply voltage exceeds a POR threshold voltage.

IPC Classes  ?

  • G05F 3/26 - Current mirrors
  • G05F 3/24 - Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode-transistor combinations wherein the transistors are of the field-effect type only
  • H02M 1/00 - Details of apparatus for conversion
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • 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 1/36 - Means for starting or stopping converters
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H03K 17/30 - Modifications for providing a predetermined threshold before switching

87.

LED dimming with slow data channel transmission

      
Application Number 15824873
Grant Number 10021745
Status In Force
Filing Date 2017-11-28
First Publication Date 2018-03-22
Grant Date 2018-07-10
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Kong, Lingxin
  • Wang, Nailong
  • Yang, Guanou
  • Hou, Benny
  • Chen, Yimin
  • Yao, Jianming

Abstract

An data transmission method is provided for transmitting analog data through an isolating device using a calibration input pulse and a data input pulse. The analog data may represent, for example, the desired dimming value for a flyback converter powering a solid state lighting system.

IPC Classes  ?

  • H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
  • H05B 37/02 - Controlling
  • H02M 1/00 - Details of apparatus for conversion

88.

Adaptive valley mode switching

      
Application Number 15825042
Grant Number 10084382
Status In Force
Filing Date 2017-11-28
First Publication Date 2018-03-22
Grant Date 2018-09-25
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Kong, Pengju
  • Bui, Hien
  • Doan, Duc
  • Zheng, Cong

Abstract

An adaptive valley mode switching power converter is provided that switches on a power switch within valley periods of a resonant voltage oscillation for the power switch. Each valley period is determined with regard to a valley threshold voltage.

IPC Classes  ?

  • 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 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

89.

Selection of multiple configuration settings using a single configuration terminal

      
Application Number 15826526
Grant Number 10333522
Status In Force
Filing Date 2017-11-29
First Publication Date 2018-03-22
Grant Date 2019-06-25
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Feng, Guang
  • Wang, Xiaoyan
  • Shi, Nan

Abstract

A single configuration terminal of a device is used to configure multiple operating parameters of the device based on a resistor and a capacitor selectively connected to the configuration terminal. The device includes a detection circuit configured to monitor a voltage signal at the configuration terminal to determine multiple values in response to a regulated current source providing a current to the configuration terminal selectively connected to the resistor and the capacitor in parallel, and configure multiple operating parameters based on the determined values. A method for configuring operating parameters using a single configuration terminal of a device includes providing a current to the configuration terminal selectively connected to a resistor and a capacitor in parallel, monitoring a voltage signal at the configuration terminal, determining multiple values based on the monitoring, and configuring multiple operating parameter based on the determined values.

IPC Classes  ?

  • H03K 19/177 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits using specified components using elementary logic circuits as components arranged in matrix form
  • H03K 19/0175 - Coupling arrangementsInterface arrangements
  • H03K 5/1532 - Peak detectors

90.

Power converters with adaptive output voltages

      
Application Number 15826573
Grant Number 10181801
Status In Force
Filing Date 2017-11-29
First Publication Date 2018-03-22
Grant Date 2019-01-15
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Yao, Jianming
  • Huang, Weihai
  • Wang, Honglai

Abstract

A switching power converter is provided that transitions between output voltage modes over a delay period using at least one of an adaptive resistor and an adaptive reference voltage circuit.

IPC Classes  ?

  • 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 7/12 - 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
  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • 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
  • H02M 1/00 - Details of apparatus for conversion
  • H02J 7/34 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering

91.

Electromagnetic interference blocking system

      
Application Number 15251651
Grant Number 10250046
Status In Force
Filing Date 2016-08-30
First Publication Date 2018-03-01
Grant Date 2019-04-02
Owner Dialog Semiconductor, Inc. (USA)
Inventor Kesterson, John

Abstract

An apparatus and method for blocking electromagnetic interference, EMI is presented. In particular, the present invention relates to a switched mode power supply provided with an electromagnetic interference protection circuit with low power dissipation. There is provided an adiabatically-switched electromagnetic interference protection circuit. The protection circuit contains a first charge storage element and a second charge storage element. A switching regulator operates with a switching cycle having an on-time and an off-time; and the control signal is arranged to cause a transition between the first mode and the second mode to start during the off-time of a switching cycle of the switching regulator.

IPC Classes  ?

  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
  • 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 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

92.

Efficient power supply voltage regulation for synchronous rectifier controller

      
Application Number 15247823
Grant Number 09935559
Status In Force
Filing Date 2016-08-25
First Publication Date 2018-03-01
Grant Date 2018-04-03
Owner DIALOG SEMICONDUCTORS INC. (USA)
Inventor
  • Kong, Pengju
  • Wang, Xiaye
  • Liang, Wenbo
  • Yao, Jianming

Abstract

A flyback converter is provided with a synchronous rectifier (SR) controller including a pulse linear regulator (PLR) charging path and an LDO charging path. The SR controller is configured to monitor the switching period and/or duty cycle of a power switch in the flyback converter to select between the PLR and LDO charging paths.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/00 - Details of apparatus for conversion

93.

System and method for controlling solid state lamps

      
Application Number 15802901
Grant Number 10298014
Status In Force
Filing Date 2017-11-03
First Publication Date 2018-02-22
Grant Date 2019-05-21
Owner
  • Dialog Semiconductor (UK) Limited (United Kingdom)
  • Dialog Semiconductor, Inc. (USA)
Inventor
  • Hu, Ye
  • Chen, Baorong
  • Yan, Liang

Abstract

A solid state driver circuit that is compatible with either a low frequency mains or magnetic ballast supply or a high frequency electronic ballast input is presented. An input detection circuit detects the frequency of the supply and selectively adjusts the drive circuit to act as a linear regulator when an electronic ballast is detected, or as a switched mode regulator when mains or a magnetic ballast is detected. There is also provided a method of driving a solid state lamp. The method has a step which receives an input power supply. The method also has an enabling operation of a switching regulator or the shorting of a switching regulator according to the frequency of the input power supply.

IPC Classes  ?

  • H02J 3/18 - Arrangements for adjusting, eliminating or compensating reactive power in networks
  • H05B 33/08 - Circuit arrangements for operating electroluminescent light sources

94.

Short circuit protection for data interface charging

      
Application Number 15212124
Grant Number 10090671
Status In Force
Filing Date 2016-07-15
First Publication Date 2018-01-18
Grant Date 2018-10-02
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Chen, Yimin
  • Liu, Mengfei
  • Doan, Duc
  • Zhang, Xiaoyong
  • Yao, Jianming

Abstract

A switching power converter is provided with an overvoltage protection circuit that softly switches on a power bus switch during a soft-start period responsive to a device connecting to a data cable for receiving power over a power bus coupled to the power bus switch.

IPC Classes  ?

  • H02J 7/06 - Regulation of the charging current or voltage using discharge tubes or semiconductor devices
  • H02J 7/24 - Regulation of the charging current or voltage by variation of field using discharge tubes or semiconductor devices
  • H02H 7/12 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

95.

Short circuit protection for data interface charging

      
Application Number 15709408
Grant Number 10770909
Status In Force
Filing Date 2017-09-19
First Publication Date 2018-01-11
Grant Date 2020-09-08
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Yao, Jianming
  • Li, Yong
  • Wong, Dickson

Abstract

A switching power converter is provided with an overvoltage protection circuit that monitors the differential data signal voltages in a data interface such as a USB data interface powering a load device to detect soft short conditions.

IPC Classes  ?

  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02H 7/122 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters
  • H02J 7/04 - Regulation of the charging current or voltage

96.

Auxiliary load application for increasing data rate of messages or for increasing the response speed to transmitted messages in a flyback converter

      
Application Number 15164831
Grant Number 10033288
Status In Force
Filing Date 2016-05-25
First Publication Date 2017-11-30
Grant Date 2018-07-24
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor Yao, Jianming

Abstract

A system and method of controlling the data transfer rate of a switching power converter when the switching frequency is below a desired level by using an auxiliary load to at least maintain output regulation.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/00 - Details of apparatus for conversion

97.

Switching power converter for direct battery charging

      
Application Number 15604449
Grant Number 10541550
Status In Force
Filing Date 2017-05-24
First Publication Date 2017-11-30
Grant Date 2020-01-21
Owner Dialog Semiconductor Inc. (USA)
Inventor
  • Shi, Fuqiang
  • Yao, Jianming
  • Li, Yong
  • Chin, Kai-Wen
  • Zheng, Cong

Abstract

A direct charging method is provided that alerts a mobile device when a switching power converter is operating in a constant-current mode to alert the mobile device of an output current without the use of a secondary-side current sense resistor.

IPC Classes  ?

  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02M 3/00 - Conversion of DC power input into DC power output
  • H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
  • H02J 7/04 - Regulation of the charging current or voltage
  • 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 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

98.

Short circuit and soft short protection for data interface charging

      
Application Number 15604515
Grant Number 11031796
Status In Force
Filing Date 2017-05-24
First Publication Date 2017-11-30
Grant Date 2021-06-08
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Yao, Jianming
  • Chin, Kai-Wen
  • Li, Yong
  • Zheng, Cong
  • Nguyen, David
  • Shi, Fuqiang

Abstract

A switching power converter is provided that communicates with a mobile device to receive a value of a load detection current. The switching power converter adjusts the cycling of a power switch until a constant current mode of operation is entered with a known output current driving the mobile device. The switching power converter subtracts the load current from the output current to measure a soft-short circuit current.

IPC Classes  ?

  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • G01R 31/50 - Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections

99.

Auxiliary winding ground fault detection for isolated DC/DC converter

      
Application Number 15583800
Grant Number 09979305
Status In Force
Filing Date 2017-05-01
First Publication Date 2017-11-02
Grant Date 2018-05-22
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor
  • Kong, Pengju
  • Doan, Duc
  • Shi, Fuqiang

Abstract

A flyback converter is provided with a controller that is configured to analyze the reflected feedback voltage waveforms to determine the presence of a ground connection fault for the auxiliary winding.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/32 - Means for protecting converters other than by automatic disconnection
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H02M 1/00 - Details of apparatus for conversion

100.

Switching power converter with efficient VCC charging

      
Application Number 15097213
Grant Number 10148186
Status In Force
Filing Date 2016-04-12
First Publication Date 2017-10-12
Grant Date 2018-12-04
Owner DIALOG SEMICONDUCTOR INC. (USA)
Inventor Gao, Xiaolin

Abstract

A switching power converter controller is provided that includes a VCC charging switch transistor coupled between a drain of a power switch transistor and a storage capacitor.

IPC Classes  ?

  • H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
  • H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
  • H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
  • 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 1/00 - Details of apparatus for conversion
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