Patents by Inventor Kai-Wen Chin

Kai-Wen Chin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Short circuit and soft short protection for data interface charging
    Patent number: 11946979
    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.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: April 2, 2024
    Assignee: Dialog Semiconductor Inc.
    Inventors: Jianming Yao, Kai-wen Chin, Yong Li, Cong Zheng, David Nguyen, Fuqiang Shi
  • Flyback converter with fast load transient detection
    Patent number: 11736026
    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.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: August 22, 2023
    Assignee: Dialog Semiconductor Inc.
    Inventors: Mengfei Liu, Yimin Chen, David Nguyen, Juyoung Yoon, Tao Li, Guang Feng, Kai-Wen Chin, Yong Xiong Lin, Jianming Yao
  • FLYBACK CONVERTER WITH FAST LOAD TRANSIENT DETECTION
    Publication number: 20210376742
    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.
    Type: Application
    Filed: May 29, 2020
    Publication date: December 2, 2021
    Inventors: Mengfei LIU, Yimin CHEN, David NGUYEN, Juyoung YOON, Tao LI, Guang FENG, Kai-Wen CHIN, Yong Xiong LIN, Jianming YAO
  • SHORT CIRCUIT AND SOFT SHORT PROTECTION FOR DATA INTERFACE CHARGING
    Publication number: 20210293897
    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.
    Type: Application
    Filed: June 8, 2021
    Publication date: September 23, 2021
    Inventors: Jianming YAO, Kai-wen CHIN, Yong LI, Cong ZHENG, David NGUYEN, Fuqiang SHI
  • Short circuit and soft short protection for data interface charging
    Patent number: 11031796
    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.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: June 8, 2021
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Jianming Yao, Kai-Wen Chin, Yong Li, Cong Zheng, David Nguyen, Fuqiang Shi
  • FLYBACK CONVERTER WITH OUTPUT CURRENT CALIBRATION
    Publication number: 20200186041
    Abstract: An output current calibration is disclosed to increase the accuracy and precision of the constant-current mode for a flyback converter.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 11, 2020
    Inventors: Kai-Wen Chin, Jianming Yao, David Nguyen, Tao Li
  • Flyback converter with output current calibration
    Patent number: 10666150
    Abstract: An output current calibration is disclosed to increase the accuracy and precision of the constant-current mode for a flyback converter.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: May 26, 2020
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Kai-Wen Chin, Jianming Yao, David Nguyen, Tao Li
  • Frequency hopping for reducing switching power converter noise
    Patent number: 10560025
    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.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: February 11, 2020
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: John Shi, John Kesterson, Cong Zheng, Kai-Wen Chin
  • Switching power converter for direct battery charging
    Patent number: 10541550
    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.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: January 21, 2020
    Assignee: Dialog Semiconductor Inc.
    Inventors: Fuqiang Shi, Jianming Yao, Yong Li, Kai-wen Chin, Cong Zheng
  • Flyback converter with output voltage calibration
    Patent number: 10483857
    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.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: November 19, 2019
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Jianming Yao, Kai-Wen Chin, David Nguyen, Tao Li
  • Smart grouping control method for power converter switching noise management
    Patent number: 10389253
    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.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: August 20, 2019
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Fuqiang Shi, Kai-Wen Chin, Cong Zheng, Jianming Yao, Yong Li
  • Line ripple compensation for switching power converters
    Patent number: 10116161
    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.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: October 30, 2018
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Kai-Wen Chin, Fuqiang Shi, Pengju Kong, David Nguyen
  • SMART GROUPING CONTROL METHOD FOR POWER CONVERTER SWITCHING NOISE MANAGEMENT
    Publication number: 20180301991
    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.
    Type: Application
    Filed: June 19, 2018
    Publication date: October 18, 2018
    Inventors: Fuqiang Shi, Kai-Wen Chin, Cong Zheng, Jianming Yao, Yong Li
  • Active startup timing control at fault mode
    Patent number: 10084370
    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.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: September 25, 2018
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Guang Feng, Pengju Kong, Kai-Wen Chin, Mingsheng Peng
  • Line Ripple Compensation for Switching Power Converters
    Publication number: 20180205254
    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.
    Type: Application
    Filed: January 13, 2017
    Publication date: July 19, 2018
    Inventors: Kai-Wen Chin, Fuqiang Shi, Pengju Kong, David Nguyen
  • ACTIVE STARTUP TIMING CONTROL AT FAULT MODE
    Publication number: 20180205310
    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.
    Type: Application
    Filed: August 22, 2017
    Publication date: July 19, 2018
    Inventors: Guang Feng, Pengju Kong, Kai-Wen Chin, Mingsheng Peng
  • FREQUENCY HOPPING FOR REDUCING SWITCHING POWER CONVERTER NOISE
    Publication number: 20180205318
    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.
    Type: Application
    Filed: March 13, 2018
    Publication date: July 19, 2018
    Inventors: John Shi, John Kesterson, Cong Zheng, Kai-Wen Chin
  • Smart Grouping control method for power converter switching noise management
    Patent number: 10003269
    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.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: June 19, 2018
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Fuqiang Shi, Kai-Wen Chin, Cong Zheng, Jianming Yao, Yong Li
  • Frequency hopping for reducing switching noise in a switching power converter
    Patent number: 9917519
    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.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: March 13, 2018
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: John Shi, John Kesterson, Cong Zheng, Kai-Wen Chin
  • Short Circuit and Soft Short Protection for Data Interface Charging
    Publication number: 20170346313
    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.
    Type: Application
    Filed: May 24, 2017
    Publication date: November 30, 2017
    Inventors: Jianming Yao, Kai-Wen Chin, Yong Li, Cong Zheng, David Nguyen, Fuqiang Shi