Patents by Inventor Kuiwei Xu

Kuiwei Xu 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).

  • Publication number: 20240097668
    Abstract: A gate driver system includes a transistor configured to be driven between switching states, the transistor including a control terminal controlled by a control voltage that has a maximum rated limit; and a gate driver coupled to the control terminal by a turn-on current path, the gate driver being configured to control the control voltage in order to drive the transistor between the switching states. The turn-on current path includes a resistor and a Zener diode connected in series, with an anode of the Zener diode connected to the control terminal and a cathode of the Zener diode connected to the resistor. The turn-on current path is configured to provide an on-current to increase the control voltage above a switching threshold. While the transistor is turned on, the Zener diode is configured to limit the control voltage to a voltage level limit that is less than the maximum rated limit.
    Type: Application
    Filed: September 19, 2022
    Publication date: March 21, 2024
    Inventors: Kuiwei XU, Weiwei CAO
  • Patent number: 11923832
    Abstract: A gate driver system includes a transistor configured to be driven between switching states, the transistor including a control terminal controlled by a control voltage that has a maximum rated limit; and a gate driver coupled to the control terminal by a turn-on current path, the gate driver being configured to control the control voltage in order to drive the transistor between the switching states. The turn-on current path includes a resistor and a Zener diode connected in series, with an anode of the Zener diode connected to the control terminal and a cathode of the Zener diode connected to the resistor. The turn-on current path is configured to provide an on-current to increase the control voltage above a switching threshold. While the transistor is turned on, the Zener diode is configured to limit the control voltage to a voltage level limit that is less than the maximum rated limit.
    Type: Grant
    Filed: September 19, 2022
    Date of Patent: March 5, 2024
    Assignee: Infineon Technologies Austria AG
    Inventors: Kuiwei Xu, Weiwei Cao