Charge Pump Device and Driving Capability Adjustment Method Thereof
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United States of America Patent
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Issued Date -
Dec 31, 2015
app pub date -
Sep 30, 2014
filing date -
Jun 26, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A charge pump device includes a driving stage, for generating a driving signal corresponding to a driving capability, a charge pump circuit, for generating an output voltage according to the driving signal, a comparing circuit, for generating a comparison result according to the output voltage and a reference voltage, a duty cycle detecting circuit, for detecting a length of a duty cycle of an indicating signal indicating the comparing result, to generate a detection result indicating the duty cycle, and a driving capability control circuit, coupled between the duty cycle detecting circuit and the driving stage, for controlling the driving capability corresponding to the driving signal according to the detection result.
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