Patents by Inventor Zhaowu Luo

Zhaowu Luo 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).

  • ZERO-VOLTAGE-SWITCHING FLYBACK CONVERTER WITH REDUCED SECONDARY SIDE CURRENT AND VOLTAGE STRESS
    Publication number: 20220038020
    Abstract: A flyback converter is provided in which either auxiliary winding or the primary winding is split into two windings. In this fashion, a different turn ratio is presented to the secondary winding during the transformer reset period as compared to when an active-clamp transistor or a ZVS switch transistor is switched on.
    Type: Application
    Filed: July 28, 2021
    Publication date: February 3, 2022
    Inventors: Huaming GUO, Yi XU, Zhaowu LUO, Yongcai LAI, Jianming YAO
  • Input voltage detection for flyback converter
    Patent number: 11075584
    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.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: July 27, 2021
    Assignees: Dialog Semiconductor Inc., Dialog Semiconductor (UK) Limited
    Inventors: Jun Zheng, Jianming Yao, Yimin Chen, Huaming Guo, Zhaowu Luo
  • INPUT VOLTAGE DETECTION FOR FLYBACK CONVERTER
    Publication number: 20190149056
    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.
    Type: Application
    Filed: November 10, 2017
    Publication date: May 16, 2019
    Inventors: Jun Zheng, Jianming Yao, Yimin Chen, Huaming Guo, Zhaowu Luo