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RESONANT SWITCHING POWER CONVERTER WITH ADAPTIVE DEAD TIME CONTROL

  • US 20100020569A1
  • Filed: 12/19/2008
  • Published: 01/28/2010
  • Est. Priority Date: 07/25/2008
  • Status: Active Grant
First Claim
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1. A resonant switching power circuit, comprising:

  • a resonant circuit including at least one inductance and at least one capacitance for transferring energy to an output of the resonant switching power circuit;

    a switching circuit coupled to the resonant circuit for transferring energy from an input voltage source to the resonant circuit, wherein the switching circuit includes a first transistor for selectively coupling the resonant circuit to an output node of the input voltage source and a second transistor for selectively coupling the resonant circuit to a return node of the input voltage source; and

    a control circuit for controlling the switching circuit such that a dead time between de-activation of one of the first transistor or the second transistor and activation of a second one of the first transistor or the second transistor is dynamically set in dependence on an indication of a magnitude of a current flowing through the inductance and a value of a voltage of the input voltage source.

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