公开(公告)号：US11418126B2

公开(公告)日：2022-08-16

申请号：US17275699

申请日：2019-07-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Toshiki Tsubouchi ,  Mineaki Isoda

IPC: H02P9/08 ,  H02P25/22 ,  H02H3/08 ,  H02M1/36 ,  H02M7/06 ,  H02M7/48 ,  H02M7/529 ,  H02H9/00

Abstract: An inrush current suppression device is an inrush current suppression device that suppresses an inrush current flowing from a DC power supply through a mechanical switch, and includes: a first capacitor having one end connected to a positive terminal of the DC power supply through the mechanical switch; a semiconductor switching element connected to the other end of the first capacitor and a negative terminal of DC power supply between the other end of the first capacitor and the negative terminal of the DC power supply; a resistance element connected in parallel to the semiconductor switching element; and a control circuit for controlling the semiconductor switching element. The control circuit has a first output port, and controls ON time and OFF time of the semiconductor switching element by outputting a PWM signal from the first output port to the semiconductor switching element after the mechanical switch is closed.