• Patent Title: Surge protection circuit with feedback control
  • Application No.: US15678991
    Application Date: 2017-08-16
  • Publication No.: US10693292B2
    Publication Date: 2020-06-23
  • Inventor: Shenglan TangJian QingXindong Duan
  • Applicant: NXP B.V.
  • Applicant Address: NL Eindhoven
  • Assignee: NXP USA, Inc.
  • Current Assignee: NXP USA, Inc.
  • Current Assignee Address: NL Eindhoven
  • Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@7c258d8
  • Main IPC: H02H9/00
  • IPC: H02H9/00 H02H9/04
Surge protection circuit with feedback control
Abstract:
A surge protection circuit includes a DC trigger circuit that generates a trigger signal when a surge pulse occurs, and a surge protection device, coupled to the DC trigger circuit, that generates a clamp voltage as an output voltage of the surge protection circuit and conducts surge currents to ground in response to the trigger signal. A feedback circuit is provided between the surge protection device and the DC trigger circuit. The feedback circuit lowers the clamp voltage so that it does not exceed a failure voltage of the surge protection device.
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