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Direct Current Converter

  • US 20100259238A1
  • Filed: 06/15/2009
  • Published: 10/14/2010
  • Est. Priority Date: 04/09/2009
  • Status: Abandoned Application
First Claim
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1. A direct current converter for converting an input voltage to an output voltage comprising:

  • a first node;

    a second node;

    an input voltage terminal, for receiving the input voltage;

    an output voltage terminal, for outputting the output voltage;

    a control power terminal, coupled to a voltage, as a voltage source for a bootstrap circuit;

    a low-voltage end, coupled to the lowest voltage;

    a control module, for generating a control signal;

    a driving-stage circuit, coupled to the input voltage terminal, the first node, the second node, the control module and the low-voltage end, for being driven by a voltage of the first node, the input voltage and the low voltage, to convert the input voltage to the switching signals and output the switching signals to the second node according to the control signal;

    an output-stage circuit, coupled to the second node and the output voltage terminal, for converting the switching signals to the output voltage; and

    a bootstrap circuit, comprising;

    a capacitor, coupled between the first node and the second node; and

    a cascade unit, coupled to the control power terminal, the first node and the control module, for controlling a connection between the control power terminal and the first node according to the control signal of the control module.

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