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.