Power control module using protection circuit for regulating backup voltage to power load during power fault
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United States of America Patent
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Nov 13, 2018
Grant Date -
Jun 21, 2018
app pub date -
Feb 14, 2018
filing date -
Nov 18, 2015
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Abstract
A power control module comprising low voltage (LV) port for receiving low supply voltage via LV supply line, high voltage (HV) input port for receiving high supply voltage via HV supply line, wherein high supply voltage is higher than low supply voltage, LV output port for providing low output voltage, HV output port for providing high output voltage, LV node coupled to LV input port, HV node coupled to HV input port, bypass circuit coupled between LV and HV nodes, LV protection circuit coupled between LV node and LV output port, and control circuitry configured to detect power fault on either LV or HV supply line, isolate the LV and HV nodes from LV and HV supply lines, provide backup voltage to LV node, and cause LV protection circuit to regulate backup voltage at LV node to maintain low output voltage at LV output port to within predetermined operating range.
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