×

DRIVING CIRCUIT FOR SWITCHING ELEMENT AND POWER CONVERTER

  • US 20120206174A1
  • Filed: 10/15/2010
  • Published: 08/16/2012
  • Est. Priority Date: 10/26/2009
  • Status: Active Grant
First Claim
Patent Images

1. A driving circuit for a switching element comprising:

  • a control circuit configured to apply a control voltage to a first terminal of a switching element including the first terminal, a second terminal and a third terminal, and thereby to cause a main circuit current to flow in a main circuit between the second terminal and the third terminal; and

    a protection circuit configured to protect the switching element when the main circuit current is an overcurrent, whereinthe protection circuit includes;

    a potential decreasing unit configured to decrease a potential of the first terminal when the main circuit current is the overcurrent,a feedback unit configured to perform feedback control on an amount of a decrease in the potential of the first terminal caused by the potential decreasing unit according to a current amount of the main circuit current, anda phase advancing unit configured to perform phase advance compensation in a feedback loop under the feedback control.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×