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Voltage transient protection circuitry

  • US 9,231,400 B2
  • Filed: 07/03/2012
  • Issued: 01/05/2016
  • Est. Priority Date: 07/10/2011
  • Status: Active Grant
First Claim
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1. A voltage transient protection circuit in a configuration comprising:

  • a bridge circuit having a high-side device operably coupled to a power supply and a gate drive, the bridge circuit also having and a low-side device operably coupled to ground and a gate drive;

    the bridge circuit also having an output node;

    a voltage reference circuit operably coupled by a switch to the gate of the high-side device; and

    a load to ground circuit operably coupled to the output node;

    whereby the high-side device may be operated under selected voltage conditions and deactivated in the event of a selected high voltage condition, such that the output node is held at a selected voltage level.

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