Patents by Inventor Cong ZHENG

Cong ZHENG 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).

  • 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
  • ADAPTIVE VALLEY MODE SWITCHING
    Publication number: 20180083538
    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.
    Type: Application
    Filed: November 28, 2017
    Publication date: March 22, 2018
    Inventors: Pengju Kong, Hien Bui, Duc Doan, Cong Zheng
  • 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
  • SWITCHING POWER CONVERTER FOR DIRECT BATTERY CHARGING
    Publication number: 20170346329
    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: Application
    Filed: May 24, 2017
    Publication date: November 30, 2017
    Inventors: Fuqiang Shi, Jianming Yao, Yong Li, Kai-wen Chin, Cong Zheng
  • 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
  • Smart Grouping Control Method for Power Converter Switching Noise Management
    Publication number: 20170214329
    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.
    Type: Application
    Filed: January 24, 2017
    Publication date: July 27, 2017
    Inventors: Fuqiang Shi, Kai-Wen Chin, Cong Zheng, Jianming Yao, Yong Li
  • Switching Power Converter with History-Based Valley Mode Switching
    Publication number: 20170212632
    Abstract: History-based valley mode switching techniques and systems are provided to reduce the frequency spreading of switching noise in a switching power converter.
    Type: Application
    Filed: January 24, 2017
    Publication date: July 27, 2017
    Inventors: Fuqiang Shi, Cong Zheng, Danna Suo
  • FREQUENCY HOPPING FOR REDUCING SWITCHING POWER CONVERTER NOISE
    Publication number: 20170214320
    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: January 25, 2016
    Publication date: July 27, 2017
    Inventors: John Shi, John Kesterson, Cong Zheng, Kai-Wen Chin
  • DEVICE AND METHOD IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20160081001
    Abstract: A system that determines a cell density and cell type in an area corresponding to a location of a user equipment; determines a mobility state of the user equipment based on the determined cell density and the determined cell type; and controls cell reselection for the user equipment based on the determined mobility state of the user equipment.
    Type: Application
    Filed: May 30, 2014
    Publication date: March 17, 2016
    Inventors: Xiaodong XU, Cuibo YU, Yateng HONG, Ya LIU, Cong ZHENG, Liyao WEI, Xiaojia SONG, Zhongbin QIN