公开(公告)号：US20230375641A1

公开(公告)日：2023-11-23

申请号：US18229991

申请日：2023-08-03

Applicant: Halo Microelectronics International

Inventor： Suming Lai ,  Kenneth Chung-Yin Kwok ,  Kien Chan Vi ,  Anan Xiang ,  Songnan Yang

IPC: G01R31/52 ,  G01R31/40 ,  H02M3/07 ,  H02J7/00

CPC classification number: G01R31/52 ,  G01R31/40 ,  H02M3/07 ,  H02J7/007 ,  H02J2207/20

Abstract: A method includes connecting an output of a switched capacitor converter to a battery, the switched capacitor converter comprising a first switch, a second switch, a third switch and an upper circuit connected in series, and a flying capacitor connected between a common node of the first switch and the second switch, and a common node of the third switch and the upper circuit, in a first short circuit testing step, determining whether the third switch is shorted by comparing a voltage on the common node of the third switch and the upper circuit with a first predetermined voltage reference, and in a second short circuit testing step, determining whether the first switch and the second switch are shorted by comparing a voltage on the common node of the first switch and the second switch with a second predetermined voltage reference and a third predetermined voltage reference, respectively.