Patent ID: 7358707

Claim:
A power supply unit comprising: a power converter for supplying power to a first output and a second output; a switch, coupled to the power converter, for regulating power supplied to the first and the second outputs, in response to a duty cycle; and a control circuit, coupled to the switch, for: receiving an indication of current level at the second output via a current feedback line coupled to the control circuit and the second output; in response to the indication of current level at the second output, adjusting the duty cycle; and increasing the duty cycle to compensate for anticipated decreases in voltage levels at the first and the second output; wherein the switch is a first switch comprising a second and a third switch coupled to the power converter for further regulating the voltage level at the first output; wherein a fourth and a fifth switch are coupled to the power converter for further regulating the voltage level at the second output; and wherein the anticipated decreases in voltage levels are caused by one or more of the following: resistance and leakage.