公开(公告)号：US12273103B2

公开(公告)日：2025-04-08

申请号：US17856674

申请日：2022-07-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xingqiang Peng ,  Shaoqing Dong ,  Jing Wen

IPC: H03K17/687 ,  H02M7/5387 ,  H03K17/06

Abstract: This application discloses a drive circuit of a bridge arm switching transistor, a drive circuit, and a power converter. The bridge arm switching transistor includes a first switching transistor and a second switching transistor. A first terminal of the first switching transistor is connected to a power supply, a second terminal of the first switching transistor is connected to a first terminal of the second switching transistor, and a second terminal of the second switching transistor is grounded. The drive circuit includes a low-voltage region and at least two high-voltage regions isolated which include a first high-voltage region and a second high-voltage region. A semiconductor device configured to drive the second switching transistor is disposed in the low-voltage region. P-type semiconductor devices are disposed in each of the first high-voltage region and the second high-voltage region, and the P-type semiconductor devices are configured to drive the first switching transistor.

公开(公告)号：US20200091823A1

公开(公告)日：2020-03-19

申请号：US16692381

申请日：2019-11-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dongqi Huang ,  Shaoqing Dong

IPC: H02M3/158

Abstract: In a current equalization circuit, where a first inductor is connected to a first resistor, a second inductor is connected to both the first inductor and a second resistor, the input end of the first resistor and the input end of the second resistor are respectively connected to a first input end and a second input end of an error detection sub-circuit, a first output end of the error detection sub-circuit is connected to a first error adjustment sub-circuit, a second output end of the error detection sub-circuit is connected to a second error adjustment sub-circuit, the first error adjustment sub-circuit adjusts an input current of the first inductor based on a voltage signal from the error detection sub-circuit, and the second error adjustment sub-circuit adjusts an input current of the second inductor based on a voltage signal from the error detection sub-circuit.

公开(公告)号：US11095224B2

公开(公告)日：2021-08-17

申请号：US16692381

申请日：2019-11-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dongqi Huang ,  Shaoqing Dong

IPC: H02M3/158

Abstract: In a current equalization circuit, where a first inductor is connected to a first resistor, a second inductor is connected to both the first inductor and a second resistor, the input end of the first resistor and the input end of the second resistor are respectively connected to a first input end and a second input end of an error detection sub-circuit, a first output end of the error detection sub-circuit is connected to a first error adjustment sub-circuit, a second output end of the error detection sub-circuit is connected to a second error adjustment sub-circuit, the first error adjustment sub-circuit adjusts an input current of the first inductor based on a voltage signal from the error detection sub-circuit, and the second error adjustment sub-circuit adjusts an input current of the second inductor based on a voltage signal from the error detection sub-circuit.