Patent ID: 7550875

Claim:
A power converter capable of providing multiple output voltages comprising: an input end for receiving an input voltage; a plurality of output ends for providing a plurality of output voltages; an inductor; a first switch coupled between a first end of the inductor and a predefined voltage with a voltage level lower than a voltage level of the input voltage; a second switch coupled between the input end and a second end of the inductor; a third switch coupled between the first end of the inductor and a first output end of the plurality of output ends; a fourth switch coupled between the second end of the inductor and a second output end of the plurality of output ends; and a control device for turning on the first switch and the second switch to charge the inductor, determining whether the first output end and the second output end are needed to be charged according to a first output voltage received from the first output end and a second output voltage received from the second output end, and turning on the second switch and the third switch to discharge the inductor through the first end of the inductor and charge the first output end, or turning on the first switch and the fourth switch to discharge the inductor through the first end of the inductor and discharge the second output end through the second end of the inductor, according to the determination result.