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DC-DC converter and power supply apparatus

  • US 7,782,028 B2
  • Filed: 03/27/2007
  • Issued: 08/24/2010
  • Est. Priority Date: 07/14/2006
  • Status: Active Grant
First Claim
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1. A DC-DC converter comprising:

  • an inductance element and a rectifier element connected in series between a voltage input terminal to accept input direct current voltage and a first output terminal;

    a switching element connected between a connection node of the inductance element and the rectifier element and a reference potential point, the switching element being directly connected to the connection node and the reference potential point; and

    a controlling circuit to form a signal to control on/off of the switching element,wherein the controlling circuit controls on/off of the switching element to control current through the inductance element, and a voltage applied to the voltage input terminal to accept the input direct current voltage is output via a second output terminal as a reference potential of a circuit at a latter stage.

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