公开(公告)号：US20230112288A1

公开(公告)日：2023-04-13

申请号：US18064186

申请日：2022-12-09

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jianhua Zhu ,  Dongchen Zhao ,  Hua Jiang

IPC: H01F27/26 ,  H02J7/00 ,  H01F27/30

Abstract: An inductor and a related apparatus are provided. The inductor includes an upper magnet yoke and a lower magnet yoke that are straight-shaped and are disposed in parallel. A first winding disposed on a first fiber post, and a second winding disposed on a second fiber post. The upper magnet yoke, a first upper fiber post, and a second upper fiber post are integrally molded. The lower magnet yoke, a first lower fiber post, and a second lower fiber post are integrally molded. A clockwise/counterclockwise direction of a current in the first winding is consistent with a clockwise/counterclockwise direction of a current in the second winding.

公开(公告)号：US12206323B2

公开(公告)日：2025-01-21

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.