Gate charge recovery circuit for gate-driven semiconductor devices

  • US 5,298,797 A
  • Filed: 03/12/1993
  • Issued: 03/29/1994
  • Est. Priority Date: 03/12/1993
  • Status: Expired due to Term
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First Claim
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1. In a circuit wherein a gate-driven semiconductor device is configured with a current sense device connected between a gate voltage reference terminal of said semiconductor device and a first terminal of a voltage source supplying a gate-driving voltage to said semiconductor device, a gate-driving device having an output terminal connected to a gate terminal of said semiconductor device and having a supply terminal through which current flows to or from said output terminal in order to force said semiconductor device to an ON state, the improvement comprising:

  • a capacitor connected between said gate voltage reference terminal of said semiconductor device and said supply terminal of said gate-driving device; and

    a filter element connected between said supply terminal of said gate-driving device and a second terminal of said voltage source.

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