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Driver circuit for controlling a resonant converter

  • US 20050116748A1
  • Filed: 01/09/2003
  • Published: 06/02/2005
  • Est. Priority Date: 01/12/2002
  • Status: Active Grant
First Claim
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1. A driver circuit for controlling upper and lower switching means for converting a direct voltage into a clocked output voltage for a resonant converter with a high-voltage section for controlling the upper switching means and a low-voltage section for controlling the lower switching means which switch the switching means on alternately, the switch-on phases of the switching means being separated from one another by dead-time phases, characterized in that there is provided a first circuit section which controls the duty cycle of the upper switching means as a function of the duty cycle a-of the lower switching means and receives control signals from the low-voltage section exclusively during the duty cycle of the lower switching means.

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