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Switching power supply system and process

  • US 5,847,941 A
  • Filed: 04/16/1997
  • Issued: 12/08/1998
  • Est. Priority Date: 11/22/1995
  • Status: Expired due to Term
First Claim
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1. A switching power supply system comprising:

  • a semiconductor switching device for selectively opening and closing a current path from a dc power source to a load;

    an inductive component connected in series with the switching device;

    a series combination of a first diode and a voltage clamp which are connected in series with each other, the series combination being connected in parallel to one of the switching device and the inductive component; and

    a control circuit for controlling the switching device;

    wherein the first diode has a carrier lifetime which is equal to or longer than a switching period of the switching device.

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