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HIGH EFFICIENCY HALF-BRIDGE DC/DC CONVERTOR

  • US 20070008744A1
  • Filed: 07/06/2006
  • Published: 01/11/2007
  • Est. Priority Date: 07/07/2005
  • Status: Abandoned Application
First Claim
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1. A high efficiency half-bridge DC/DC converter comprising:

  • a switching part having first and second switches serially connected from a power supply to a ground, the first and second switches switching on/off in response to first and second switching signals having a fixed frequency, the first switching signal having a phase level that does not overlap a corresponding phase level of the second switching signal;

    a transformer for transforming a voltage applied to a first winding into a second winding in response to switching operation of the switching part, and resonating by an inductor and a capacitor of the first winding;

    a rectifier including a rectifying diode for rectifying the voltage from the transformer into a direct voltage;

    a feedback circuit for detecting the voltage outputted via the rectifier; and

    a controller for controlling pulse width of the first and second switching signals in a pulse width modulation mode according to the voltage detected by the feedback circuit.

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