Device and method for providing power to a microcontroller
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United States of America Patent
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May 6, 2014
Issued Date -
N/A
app pub date -
Aug 17, 2011
filing date -
Aug 18, 2010
priority date (Note) -
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Abstract
A charge pump device and method for providing power to a microcontroller where the voltage required to operate the microcontroller (VCCmin) is greater than the voltage of the power source, which may be a single galvanic cell. The invention utilizes a flying capacitor circuit having a flying capacitor, and a supply capacitor connected to the power supply terminal of the microcontroller. The invention utilizes firmware that runs on the microcontroller and which controls the flying capacitor circuit to repeatedly switch the flying capacitor from being connected in series with the power source to being connected in parallel with the power source so as to maintain the voltage provided to the microcontroller at a level of at least VCCmin.
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