Voltage regulator with power stage sleep modes
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United States of America Patent
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Feb 14, 2017
Grant Date -
Oct 22, 2015
app pub date -
Apr 17, 2014
filing date -
Apr 17, 2014
priority date (Note) -
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Abstract
A power stage of a voltage regulator includes a first switch for connecting a load to a supply voltage in a first switching state of the power stage, a second switch for connecting the load to ground in a second switching state of the power stage and driver circuitry for setting the power stage in the first switching state, the second switching state or a non-switching state in which both switches are off responsive to a switching control signal received by the power stage. A power management unit moves the power stage from a nominal power mode to a first low power mode if the power stage is in the non-switching state for a predetermined time period.
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