Patents by Inventor Saizhen CHEN

Saizhen CHEN 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).

  • Gate voltage magnitude compensation equalization method and circuit for series operation of power switch transistors
    Patent number: 11437986
    Abstract: A gate voltage magnitude compensation equalization method and circuit for series operation of power switch transistors are provided. A dynamic voltage equalization of series-connected power switch transistors is implemented by using sampling principles where voltages of the power switch transistors are controlled by gate voltage magnitude and unbalanced voltage differentials are converted into unbalanced current differentials of buffer currents. The gate voltage magnitude compensation equalization method and circuit relates to differential control and works in a dynamic voltage change process of the series-connected power switch transistors, without having a negative effect on operation of the power switch transistors under normal operating conditions.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: September 6, 2022
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Wuhua Li, Chengmin Li, Saizhen Chen, Haoze Luo, Xin Xiang, Chushan Li, Xiangning He
  • GATE VOLTAGE MAGNITUDE COMPENSATION EQUALIZATION METHOD AND CIRCUIT FOR SERIES OPERATION OF POWER SWITCH TRANSISTORS
    Publication number: 20210399724
    Abstract: A gate voltage magnitude compensation equalization method and circuit for series operation of power switch transistors are provided. A dynamic voltage equalization of series-connected power switch transistors is implemented by using sampling principles where voltages of the power switch transistors are controlled by gate voltage magnitude and unbalanced voltage differentials are converted into unbalanced current differentials of buffer currents. The gate voltage magnitude compensation equalization method and circuit relates to differential control and works in a dynamic voltage change process of the series-connected power switch transistors, without having a negative effect on operation of the power switch transistors under normal operating conditions.
    Type: Application
    Filed: June 1, 2020
    Publication date: December 23, 2021
    Applicant: Zhejiang University
    Inventors: Wuhua LI, Chengmin LI, Saizhen CHEN, Haoze LUO, Xin XIANG, Chushan LI, Xiangning HE