公开(公告)号：US20200328674A1

公开(公告)日：2020-10-15

申请号：US16913219

申请日：2020-06-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bo YU ,  Jinxiang ZHAN ,  Peiyong LI ,  Dianbo FU

IPC: H02M3/07 ,  H02M1/32

Abstract: A boost power conversion circuit includes an inductor, a first switch module, a second switch module, a first unilateral conduction component, a second unilateral conduction component, a flying capacitor, an upper bus capacitor, a lower bus capacitor, and a third unilateral conduction component. The power supply, the inductor, the first switch module, and the second switch module are connected in series to form a loop. The first unilateral conduction component, the second unilateral conduction component, the upper bus capacitor and the lower bus capacitor are connected in series. The flying capacitor is electrically connected between a reverse cut-off end of the first unilateral conduction component and a forward conduction end of the second unilateral conduction component. The third unilateral conduction component is configured to clamp a voltage stress of the second switch module to a lower-bus voltage.