公开(公告)号：US20240243655A1

公开(公告)日：2024-07-18

申请号：US18617923

申请日：2024-03-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xijun ZHANG ,  Xue ZHANG ,  Jun YAO ,  Qiya YANG ,  Hongfeng LIANG ,  Chao GAO ,  Yongchao LI

IPC: H02M1/42 ,  H02M1/00

CPC classification number: H02M1/4225 ,  H02M1/0054

Abstract: In a power factor correction PFC circuit control method and a PFC circuit, a control module determines that an alternating current on a single-phase input/output terminal is in a positive half cycle. The control module turns on or turns off switching transistors on the first bridge arm and the second bridge arm, to boost a first voltage at a first parallel connection point. The control module turns on a switching transistor on the third bridge arm when determining that the first voltage is equal to a voltage of a positive bus of the direct current module. A switching loss of the PFC circuit can be effectively reduced, and performance of the PFC circuit can be improved.