Programmable slew rate power path switch with integrated super capacitor charging system
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United States of America Patent
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May 9, 2017
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N/A
app pub date -
Aug 26, 2014
filing date -
Aug 26, 2014
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Abstract
A fully integrated circuit configuration that can be used to control the power path of a pair of PMOS load switches is described. The circuit also integrates a programmable slew rate for the second PMOS load switch in order to control the power path from the input system voltage (battery or power supply) or from a backup source of power. The integrated circuit configuration also contains a charge pump circuit which can be used to charge the backup source of power to a voltage that is greater than the input voltage.
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