公开(公告)号：US20190207598A1

公开(公告)日：2019-07-04

申请号：US16223514

申请日：2018-12-18

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Hao Yu ,  Fan Zhang ,  Zhihui Yuan ,  Jiao Liu ,  Stefan Schroeder ,  Yingqi Zhang

IPC: H03K17/0812

CPC classification number: H03K17/0822 ,  H03K17/0828

Abstract: A protection circuit for a controllable switch comprising a control terminal, a first terminal, and a second terminal having a lower electric potential than the first terminal, the protection device comprising: an active clamping module, coupled between the first terminal and the control terminal of the controllable switch, configured to clamp a first voltage across the first terminal and the second terminal; and a damping module, coupled to an output of the active clamping module and configured to damp oscillations of a second voltage across the control terminal and the second terminal. Embodiments of the present disclosure also relate to a protection method for a controllable switch.