公开(公告)号：US20230327560A1

公开(公告)日：2023-10-12

申请号：US18325946

申请日：2023-05-30

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Wenguang Li ,  Zejie Lv ,  Yulian Ke

IPC: H02M3/158 ,  G01R19/04 ,  H02M1/00

CPC classification number: H02M3/1582 ,  G01R19/04 ,  H02M1/0009

Abstract: This application discloses a voltage conversion circuit, a voltage converter, and an electronic device. The voltage conversion circuit mainly includes a detection circuit having a first detection resistor and a second detection resistor, and a buck-boost circuit of an H-bridge structure. The first detection resistor is connected between one input end of the buck-boost circuit and one bridge arm of the H-bridge structure, the second detection resistor is connected between one output end of the buck-boost circuit and the other bridge arm of the H-bridge structure, and the detection circuit may output a current detection signal based on resistor voltages of the first detection resistor and the second detection resistor.

公开(公告)号：US20240159798A1

公开(公告)日：2024-05-16

申请号：US18419284

申请日：2024-01-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Dinghua Shen ,  Wenguang Li ,  Baoguo Chen ,  Hongda Weng

IPC: G01R15/04 ,  G01R19/00 ,  G01R35/00

CPC classification number: G01R15/04 ,  G01R19/0084 ,  G01R35/005

Abstract: The voltage sampling apparatus includes a differential circuit, a voltage division circuit, and a first calibration switch. A first output end of the differential circuit and an input end of a first voltage division branch of the voltage division circuit are connected to one end of the first calibration switch. A second output end of the differential circuit and an input end of a second voltage division branch of the voltage division circuit are connected to the other end of the first calibration switch. When the first calibration switch is in an on state, the differential circuit is configured to input a target signal to the first voltage division branch and the second voltage division branch that are connected in parallel.

公开(公告)号：US20230299680A1

公开(公告)日：2023-09-21

申请号：US18193898

申请日：2023-03-31

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jinwei Tang ,  Wenguang Li ,  Changlei Du

IPC: H02M3/158 ,  H02M1/00 ,  B60L53/22

CPC classification number: H02M3/1586 ,  B60L53/22 ,  H02M1/0009

Abstract: A power supply includes an input power supply, a multiphase interleaved parallel converter, and a current sampling apparatus. The input power supply is configured to supply power to an input end of the multiphase interleaved parallel converter. The multiphase interleaved parallel converter includes at least two phases of converters that are connected in parallel. The current sampling apparatus is connected to a switching transistor in each phase of converter in the at least two phases of converters that are connected in parallel. The current sampling apparatus includes a first sampling resistor. The first sampling resistor is connected to the input end or an output end of the multiphase interleaved parallel converter. The current sampling apparatus is configured to determine an inductor current of a first phase of converter based on a first current that is of the first sampling resistor and that is collected at a first moment.