公开(公告)号：US20240291380A1

公开(公告)日：2024-08-29

申请号：US18658640

申请日：2024-05-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yukun WU ,  Peiqing HU ,  Shanchun ZHANG

IPC: H02M1/32 ,  H02J7/00 ,  H02M1/36

CPC classification number: H02M1/32 ,  H02J7/0047 ,  H02J7/007182 ,  H02M1/36 ,  H02J2207/50

Abstract: This application provides a soft-start circuit, a control method thereof, and a power supply device. The soft-start circuit includes a controller, a switch unit, a free-wheeling unit, an energy storage unit, and an energy release unit. In a first time period, the controller is configured to control the switch unit to be on, so that the power module charges the energy storage unit through the energy release unit. In a second time period, the controller is configured to control the switch unit to be off, so that the energy release unit discharges the energy storage unit through the free-wheeling unit. The first time period and the second time period are one operating cycle. According to embodiments of this application, a soft-start function can be implemented. In addition, a smaller size is occupied, and costs are reduced.