DC-DC converter and control method thereof
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United States of America Patent
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May 3, 2011
Grant Date -
Dec 11, 2008
app pub date -
Jun 10, 2008
filing date -
Jun 11, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A first power supply line and having a first conductivity type a second transistor coupled between the first transistor and a second power supply line, and having the first conductivity type an output unit driving a first control signal causing the first transistor to become conductive, based on a drive voltage, and outputting the first control signal to the first transistor and a boot strap circuit including a capacitor having a first end coupled to a node of the first transistor and the second transistor and supplying the output unit with the drive voltage based on the capacitor, wherein an electric potential of the first end is reduced before the first transistor becomes conductive.
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