AC-to-DC charge pump having a charge pump and complimentary charge pump
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United States of America Patent
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Jul 25, 2017
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app pub date -
Dec 31, 2012
filing date -
Aug 14, 2011
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Abstract
An improved AC-to-DC charge pump for use, for example, in voltage generation circuits. In one embodiment, two 2-diode charge pumps are coupled in back-to-back configuration, and adapted to develop a substantially stable voltage on a mid-level rail. In one other embodiment, two 3-diode charge pumps are coupled in back-to-back configuration, and adapted also to develop a substantially stable voltage on a mid-level rail. In one preferred embodiment, all diodes are implemented as current-source-biased MOSFETs.
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