CHARGE PUMP
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United States of America Patent
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Issued Date -
Jun 24, 2010
app pub date -
Dec 23, 2008
filing date -
Dec 23, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A high power DC-DC converter uses wide bandgap semiconductor switches and capacitors as a charge pump to convert a DC input to a DC output of a different potential. Each capacitor is connected to the output of one of the stages of the charge pump. A wide bandgap semiconductor switch is connected between the input and output of each stage, and the conductive state of the switch is controlled by a circuit that compares voltage at the input and output of the stage. A multiphase drive alternates drive voltage applied to the capacitors to cause charge to be passed from stage-to-stage through the charge pump.
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