Patents Assigned to GLOBAL POWER TECHNOLOGY CO., LTD.
  • Patent number: 11336277
    Abstract: This invention introduces the negative feedback into the gate drive. It proposes a negative feedback active gate drive (NFAGD) for silicon carbide (SiC) and gallium nitride (GaN) semiconductor devices to fully utilize their potential of high switching-speed capability in a phase-leg configuration. An auxiliary P-channel MOSFET is introduced to construct a negative feedback control mechanism. Due to the negative feedback mechanism, the proposed drive can automatically attenuate the disturbance from the complementary device of the phase-leg. The negative feedback active gate drive (NFAGD) has a simple structure and easy to be realized using a push-pull drive circuit, a drive resistor, an auxiliary MOSFET and an auxiliary capacitor, without involving any additional logical circuits.
    Type: Grant
    Filed: April 29, 2021
    Date of Patent: May 17, 2022
    Assignees: BEIJING JIAOTONG UNIVERSITY, GLOBAL POWER TECHNOLOGY CO., LTD.
    Inventors: Tiancong Shao, Zhijun Li, Trillion Q. Zheng, Bo Huang, Junxing Wang