公开(公告)号：US20170373490A1

公开(公告)日：2017-12-28

申请号：US15344552

申请日：2016-11-06

Applicant: NXP B.V.

Inventor： DONGYONG ZHU ,  Arjan Mels ,  Peter Christiaans

IPC: H02H9/02 ,  H01L27/02 ,  H02H9/04

CPC classification number: H02H9/025 ,  H01L27/0255 ,  H01L27/0266 ,  H01L27/0285 ,  H01L27/0288 ,  H02H9/046

Abstract: A surge protection circuit includes a DC trigger circuit that generates a trigger signal when a surge pulse occurs, and a current conducting unit, coupled to the DC trigger circuit, that generates a first clamp voltage as an output voltage of the surge protection circuit and conducts surge currents to ground in response to the trigger signal. The DC trigger circuit includes a surge detection circuit and a first amplification circuit. The surge detection circuit detects if a surge pulse occurs, and triggers the first amplification circuit to generate the trigger signal when the surge detection circuit detects a surge pulse.