Patent ID: 7020786

Claim:
In an information handling system, a method of selecting a voltage output reference required of a DC-DC converter included in a power supply of the information handling system, the voltage output reference corresponding to an operating state of the information handling system, the method comprising: generating a startup voltage output reference of the DC-DC converter when power is initially provided to the information handling system; identifying type of a processor included in the information handling system, the processor being coupled to a memory; reading from the memory data corresponding to a voltage required for each of a plurality of operating states of the identified processor; transferring data corresponding to the voltage required for each of the plurality of operating states of the processor to a respective read-write register; receiving a control input representing an operating state of the processor; selecting an output of the respective read-write register corresponding to the operating state using the control input; and generating the output voltage required by the DC-DC converter based upon the selected output of the respective read-write register.