Patent ID: 7956494

Claim:
A multiple-output power supply device, comprising: a monolithic integrated circuit including: a first switching converter on a first portion of the monolithic integrated circuit; a second switching converter on a second portion of the monolithic integrated circuit; and a control circuit connected to the first and second switching converters and adapted to independently enable and disable each of the first and second switching converters, wherein: the first switching converter (i) has a first terminal adapted to receive a first supply voltage and a second terminal adapted to receive a second supply voltage and (ii) is adapted to convert a first selected one of the first and second supply voltages to a first output signal, the second switching converter (i) has a third terminal for receiving the first supply voltage and a fourth terminal for receiving the second supply voltage and (ii) is adapted to convert a second selected one of the first and second supply voltages to a second output signal, and the control circuit (i) includes at least one input terminal adapted to receive a control signal indicating whether the first and second switching converters are to be independently enabled or disabled and (ii) is adapted to independently enable or disable the first and second switching converters based on the control signal.