Patents by Inventor Biing Long Shu

Biing Long Shu 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).

  • METHOD AND APPARATUS TO REDUCE OVERCURRENT DURING THE STARTUP OF A SWITCHING REGULATOR
    Publication number: 20140112035
    Abstract: A power supply apparatus includes an inductor to store and discharge energy and a circuit to charge the inductor using a plurality of charging pulses. The circuit skips a charging pulse of the plurality of charging pulses to reduce overcurrent associated with the inductor.
    Type: Application
    Filed: October 21, 2013
    Publication date: April 24, 2014
    Applicant: Marvell World Trade Ltd.
    Inventors: Biing Long SHU, Jinho CHOI, Jye Sheng HONG, Ravishanker KRISHNAMOORTHY
  • METHOD AND APPARATUS FOR STARTING UP
    Publication number: 20130242622
    Abstract: Aspects of the disclosure provide a method. The method includes receiving an input voltage rectified from an alternating current (AC) power supply, detecting a time duration that the input voltage is between a first threshold voltage and a second threshold voltage, determining a line voltage of the AC power supply based on the time duration, and regulating a time for turning on a switch to transfer energy via a transformer based on the detected line voltage.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 19, 2013
    Applicant: Marvell World Trade Ltd.
    Inventors: Hao PENG, Jinho Choi, Biing Long Shu
  • REDUCING VOLTAGE STRESS IN A FLYBACK CONVERTER DESIGN
    Publication number: 20120163040
    Abstract: Disclosed is flyback converter having a controller that performs a startup switching process when the flyback converter is powered up, and then performs normal switching afterward. The controller includes a pulse generator to generate a control signal for normal switching. During startup switching, the controller may generate a control signal by output every Nth pulse from the pulse generator. In another embodiment, the controller may generate pulses based on a sense signal provided from an input section of the flyback converter.
    Type: Application
    Filed: December 23, 2011
    Publication date: June 28, 2012
    Inventors: Hong Liang Zhang, Sen Dou, Ravishanker Krishnamoorthy, Biing Long Shu, Wanfeng Zhang