Power switching system with control signal driven supply voltage
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United States of America Patent
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Mar 1, 2016
Issued Date -
N/A
app pub date -
Dec 26, 2012
filing date -
Oct 31, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
Generally, this disclosure provides systems and methods for a power switching system with a switching control circuit powered by a supply voltage derived from an input control signal. The system may include a power switch configured to electrically couple a device between a battery voltage and a ground, the device to be powered by the battery when the power switch is closed; a control circuit coupled to a gate port of the power switch, the control circuit configured to open and close the power switch by adjusting a gate driving signal provided to the gate port in response to a switching control signal provided to the control circuit; and a voltage conditioning circuit configured to generate a supply voltage based on the switching control signal, such that the supply voltage powers the control circuit.
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