Patent ID: 9651967
Date: 2017-05-16
CPC Classifications: G05F

Claim:
1. A system for supplying power, comprising: an input port; an output port; a regulator, wherein the regulator receives a voltage at the input port and using the received voltage at the input port supplies power to the output port in a first mode, sinks current from the output port in a second mode when a voltage at the output port exceeds a threshold, and is disabled in a third mode and the regulator is a push/pull low-dropout regulator; and a clamp, wherein the clamp is disabled in the first and second modes, the voltage at the output port being held by the push/pull-dropout regulator between a minimum voltage and a maximum voltage in the first and second modes, and the clamp is enabled to limit the voltage at the output port below the maximum voltage in the third mode, wherein the enabling of the clamp is caused by a drop in the received voltage at the input port below or equal to a selected voltage.