公开(公告)号：US20240283244A1

公开(公告)日：2024-08-22

申请号：US18653079

申请日：2024-05-02

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Baoguo CHEN ,  Hua JIANG ,  Yiyi HUANG ,  Hui DONG

IPC: H02J1/08

CPC classification number: H02J1/084

Abstract: A power supply circuit may include a plurality of first switches, a plurality of second switches, and a third switch. The plurality of first switches may be in a one-to-one correspondence with the plurality of load units, and the plurality of second switches may be in a one-to-one correspondence with the plurality of load units. A first end of each first switch and a first end of the third switch may be connected to a first end of a direct current power supply, a second end of each first switch may be connected to a first end of a corresponding second switch and a first end of a corresponding load unit, a second end of each second switch may be connected to a second end of the third switch, and a second end of the direct current power supply may be connected to a second end of each load unit.

公开(公告)号：US20230089905A1

公开(公告)日：2023-03-23

申请号：US17994635

申请日：2022-11-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Hua JIANG ,  Zejie LV ,  Baoguo CHEN

IPC: H02M1/42 ,  H02M1/00 ,  H02M1/44

Abstract: A bridgeless PFC circuit includes: a control module that collects a current flowing through a current sampling element; and when the current flowing through the current sampling element is greater than a first threshold, the control module controls a switch element to be turned on. Based on the current flowing through the current sampling element, the switch element can be controlled to be turned on, thereby implementing zero-voltage turn-on of the switch element. Because the collected current does not change abruptly, a delay requirement on a sampling control circuit included in the control module is lowered, and a signal anti-interference capability of the control module is strong.