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INPUT RELAY ARCHITECTURE FOR RECTIFYING POWER CONVERTERS AND SUITABLE FOR AC OR DC SOURCE POWER

  • US 20130308356A1
  • Filed: 03/05/2013
  • Published: 11/21/2013
  • Est. Priority Date: 04/17/2012
  • Status: Active Grant
First Claim
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1. A power converter, comprising:

  • a rectifier;

    a protection circuit comprising a first relay, the first relay having a contact path coupled between an input of the power converter via a first node and the rectifier;

    a shunt circuit connected to the first node, and comprising a transistor with a conduction path coupled to the first node; and

    shunt control circuitry having an output connected to a control terminal of the transistor, the shunt control circuitry set up to turn on the transistor responsive to a fault condition at the rectifier.

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