Patent ID: 7265504

Claim:
A power supply for plural loads coupled in parallel, comprising: a voltage regulator providing a common output voltage to the plural loads, the voltage regulator comprising a sensor circuit providing a voltage sense signal corresponding to the output voltage, the voltage sense signal providing feedback to regulate the output voltage at a selected level; a plurality of current regulators coupled to respective ones of the plural loads, each of the plurality of current regulators regulating current drawn by respective ones of the plural loads to within a desired regulation range, the plurality of current regulators each further providing a respective error signal corresponding to an ability to remain within the desired regulation range, and an error control circuit operatively coupled to the voltage regulator and to the plurality of current regulators, the error control circuit receiving the error signals from the plurality of current regulators and providing a common error signal to the voltage regulator, the voltage regulator thereby changing the selected level of the output voltage in response to the common error signal; wherein, the selected level of the output voltage is a minimum voltage to keep the plural loads in the desired regulation range.