CLOCK FREEZING TECHNIQUE FOR CHARGE PUMPS
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United States of America Patent
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Issued Date -
Dec 29, 2016
app pub date -
Jun 26, 2015
filing date -
Jun 26, 2015
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Abandoned
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Abstract
Methods and systems for generating voltages greater than a supply voltage are described. A charge pump system may generate a boosted output voltage greater than the supply voltage using one or more charge pump stages that are arranged in series between the supply voltage and the boosted output voltage. The charge pump system may include clock freezing circuitry that eliminates glitches in clock signals used for driving the one or more charge pump stages. In one example, the clock freezing circuitry may freeze a clock signal that drives a charge pump stage (i.e., prevent the clock signal from switching) when a feedback flag of the charge pump system is in a disable state (e.g., is low). When the feedback flag is in an enable state (e.g., is high), then the clock signal may toggle between a high state and a low state.
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