Patents by Inventor Chih-Chiao TSAI

Chih-Chiao TSAI 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).

  • Synchronous rectifier controllers with slew-rate detector
    Patent number: 11296605
    Abstract: A synchronous rectifier controller controls a rectification power switch connected in series with a secondary winding between two power lines. The synchronous rectifier has a gate driver and a slew-rate detector. The gate driver drives the rectification power switch. The slew-rate detector detects a channel voltage of the rectification power switch, checks if a slew rate of the channel voltage exceeds a slope threshold. If the slew rate exceeds the slope threshold, the slew-rate detector turns the rectification power switch ON through the gate driver. If the slew rate is less than the slope threshold, the slew-rate detector reduces the slope threshold.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: April 5, 2022
    Inventors: Chih-Chiao Tsai, Jui-Chang Chuang
  • SYNCHRONOUS RECTIFIER CONTROLLERS AND CONTROL METHODS THEREOF
    Publication number: 20210067026
    Abstract: A synchronous rectifier controller controls a rectification power switch connected in series with a secondary winding between two power lines. The synchronous rectifier has a gate driver and a slew-rate detector. The gate driver drives the rectification power switch. The slew-rate detector detects a channel voltage of the rectification power switch, checks if a slew rate of the channel voltage exceeds a slope threshold. If the slew rate exceeds the slope threshold, the slew-rate detector turns the rectification power switch ON through the gate driver. If the slew rate is less than the slope threshold, the slew-rate detector reduces the slope threshold.
    Type: Application
    Filed: May 13, 2020
    Publication date: March 4, 2021
    Inventors: Chih-Chiao TSAI, Jui-Chang CHUANG