Patent ID: 7486529
Filing Date: 2009-02-03
Classification: H02M,Y10S

Abstract:
1. A power supply controller comprising: a first input configured to receive an operating voltage having a first value from a first voltage source that is external to the power supply controller; a second input configured to receive a first current from a voltage regulator that is external to the power supply controller wherein the voltage regulator is coupled to receive the operating voltage; and a switch configured to receive the first current from the voltage regulator, the switch configured to decouple the power supply controller from receiving the first current, a control circuit of the power supply controller configured to monitor a value of the operating voltage and to control the switch, responsively to the value of the operating voltage, to decoupled the power supply controller from receiving the first current until the operating voltage reaches the first value and wherein the control circuit is configured control the switch, responsively to the value of the operating voltage, to couple the power supply controller to receive the first current after the value of the operating voltage reaches the first value wherein the voltage regulator changes the first value of the operating voltage to a second value that is less than the first value responsively to the switch coupling the power supply controller to receive the first current.