Patents by Inventor Xinli Peng

Xinli Peng 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).

  • Adaptive stability control for a driver circuit
    Patent number: 9635724
    Abstract: A circuit may include a control loop to regulate an output of the circuit and a headroom sensing circuit to produce a headroom sensing signal indicative of a headroom voltage of the circuit. The control loop may have a response characteristic that is set based on the headroom signal received from the headroom sensing circuit.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: April 25, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Xinli Peng, Sandeep Chaman Dhar, Troy Stockstad
  • ADAPTIVE STABILITY CONTROL FOR A DRIVER CIRCUIT
    Publication number: 20160037603
    Abstract: A circuit may include a control loop to regulate an output of the circuit and a headroom sensing circuit to produce a headroom sensing signal indicative of a headroom voltage of the circuit. The control loop may have a response characteristic that is set based on the headroom signal received from the headroom sensing circuit.
    Type: Application
    Filed: October 14, 2015
    Publication date: February 4, 2016
    Inventors: Xinli Peng, Sandeep Chaman Dhar, Troy Stockstad
  • ADAPTIVE STABILITY CONTROL FOR A DRIVER CIRCUIT
    Publication number: 20150349752
    Abstract: A circuit for driving a load may include a control loop having a response characteristic. A headroom signal indicative of the headroom voltage of the circuit may set one or more parameters of the response characteristic. A load sign indicative of electrical loading on the circuit may further set the response characteristic.
    Type: Application
    Filed: June 2, 2014
    Publication date: December 3, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Xinli Peng, Sandeep Chaman Dhar, Troy Stockstad
  • Adaptive stability control for a driver circuit
    Patent number: 9190986
    Abstract: A circuit for driving a load may include a control loop having a response characteristic. A headroom signal indicative of the headroom voltage of the circuit may set one or more parameters of the response characteristic. A load sign indicative of electrical loading on the circuit may further set the response characteristic.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: November 17, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Xinli Peng, Sandeep Chaman Dhar, Troy Stockstad
  • Method and apparatus for current derating with integrated temperature sensing
    Patent number: 9081555
    Abstract: A method and apparatus for derating current and for derating current for a camera flash. The method comprises monitoring a local junction temperature of a module. The local junction temperature is converted into a local junction current. The local junction current is then compared with a reference current, which is independent of temperature. After the current comparison and subtraction is made, a derate control current is obtained to generate the LED reference current. After the temperature crosses the temperature threshold, the derate control current is derated. Both the temperature threshold and current derate slope are programmable and precisely controlled. The LED output current is regulated and proportional to the LED reference current. If the local junction temperature is greater than the temperature threshold, the LED output current is derated at the moment of the camera flash to avoid thermal overload.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: July 14, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Xinli Peng, Troy Stockstad, Ricardo T. Goncalves
  • METHOD AND APPARATUS FOR CURRENT DERATING WITH INTEGRATED TEMPERATURE SENSING
    Publication number: 20140015446
    Abstract: A method and apparatus for derating current and for derating current for a camera flash. The method comprises monitoring a local junction temperature of a module. The local junction temperature is converted into a local junction current. The local junction current is then compared with a reference current, which is independent of temperature. After the current comparison and subtraction is made, a derate control current is obtained to generate the LED reference current. After the temperature crosses the temperature threshold, the derate control current is derated. Both the temperature threshold and current derate slope are programmable and precisely controlled. The LED output current is regulated and proportional to the LED reference current. If the local junction temperature is greater than the temperature threshold, the LED output current is derated at the moment of the camera flash to avoid thermal overload.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 16, 2014
    Applicant: QUALCOMM INCORPORATED
    Inventors: Xinli Peng, Troy Stockstad, Ricardo T. Goncalves