Measuring and controlling current consumption and output current of charge pumps
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United States of America Patent
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Oct 20, 2009
Grant Date -
Apr 24, 2008
app pub date -
Nov 21, 2006
filing date -
Sep 18, 2006
priority date (Note) -
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Abstract
The present invention is a method and apparatus for regulating current consumption and output current of a charge pump. According to some embodiments of the present invention, a first current coming into the charge pump and a second current coming into a driver of at least one of one or more stages of the charge pump is measured. A control loop may regulate one or more parameters of the charge pump and/or a load connected to the charge pump, such as by adjusting one or more of: a supply voltage; a stage's voltage; the stage's frequency and/or duty-cycle; and the number of stages.
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