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    Segmented direct gate drive circuit of a depletion mode GaN power device
    1.
    发明授权
    Segmented direct gate drive circuit of a depletion mode GaN power device 有权

    公开(公告)号：US10911045B1

    公开(公告)日：2021-02-02

    申请号：US17005350

    申请日：2020-08-28

    Applicant: University of Electronic Science and Technology of China

    Inventor： Xin Ming ,  Bo Zhang ,  Qifei Xu ,  Shuai Mao ,  Xudong Feng ,  Zhuo Wang

    IPC: H03K17/687

    Abstract: A segmented direct gate drive circuit of a depletion mode GaN power device, a gate voltage of the GaN power device is charged from a negative voltage turn-off level to a threshold voltage of the GaN power device; when the gate voltage of the GaN power device is charged to the threshold voltage of the GaN power device, a current mirror charging module first turns on less than N of charging current mirror modules to charge the gate voltage of the GaN power device from the threshold voltage of the GaN power device to a Miller platform voltage of the GaN power device, and turns on N charging current mirror modules to charge the gate voltage of the GaN power device from the Miller platform voltage of the GaN power device to a zero level.

    Low-dropout regulator with dynamic pole tracking circuit for improved stability
    3.
    发明授权
    Low-dropout regulator with dynamic pole tracking circuit for improved stability 有权

    公开(公告)号：US09891644B1

    公开(公告)日：2018-02-13

    申请号：US15387678

    申请日：2016-12-22

    Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

    Inventor： Xin Ming ,  Tiansheng Li ,  Jun Xu ,  Zhuo Wang ,  Bo Zhang

    IPC: G05F1/575 ,  G05F1/563 ,  G05F1/565

    CPC classification number: G05F1/575 ,  G05F1/563 ,  G05F1/565

    Abstract: A low-dropout regulator, including: a dynamic pole tracking circuit having an active load, a voltage-to-current converter, a current amplifier, a bias circuit, a regulating transistor, a first feedback resistor, a second feedback resistor, and a first capacitor. The dynamic pole tracking circuit includes: a first PMOS, a second PMOS, a first resistor, and a second resistor. The voltage-to-current converter includes: a first NMOS, a second NMOS, a third NMOS, a fourth NMOS, a fifth NMOS, a sixth NMOS, a seventh NMOS, an eighth NMOS, a third PMOS, a fourth PMOS, a seventh PMOS, an eighth PMOS. The current amplifier includes: a fifth PMOS, a sixth PMOS, a ninth NMOS, a tenth NMOS, and a third resistor. The bias circuit includes: a ninth PMOS, a tenth PMOS, an eleventh PMOS, an eleventh NMOS, a twelfth NMOS, a thirteenth NMOS, and a fourth resistor.

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