Patents by Inventor Yongcai LAI

Yongcai LAI 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
    Patent number: 12113448
    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: Grant
    Filed: July 28, 2021
    Date of Patent: October 8, 2024
    Assignee: DIALOG SEMICONDUCTOR (UK) LIMITED
    Inventors: Huaming Guo, Yi Xu, Zhaowu Luo, Yongcai Lai, Jianming Yao
  • 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
  • USB type-C hub
    Patent number: D1029772
    Type: Grant
    Filed: September 30, 2022
    Date of Patent: June 4, 2024
    Inventor: Yongcai Lai