Patent ID: 7535205

Claim:
A power supply device comprising: a first switch including a first terminal connected to a first voltage reference of an input voltage and a second terminal; a second switch including a first terminal connected to a second voltage reference of the input voltage and a second terminal coupled to the second terminal of the first switch; a first diode including a first terminal and a second terminal coupled to the first terminal of the first switch; a second diode including a first terminal coupled to the first terminal of the first diode and a second terminal coupled to the first terminal of the second switch; a third diode including a first terminal coupled to the first terminal of the first diode and a second terminal coupled to the second terminal of the first switch; a transistor including a first current electrode, a second current electrode coupled to the second terminal of the first switch, and control electrode; and a digital control module including a first input terminal, a second input terminal, a first output terminal coupled to the first switch, a second output terminal coupled to the second switch, and a third output terminal coupled to the control electrode of the transistor, the digital control module operably configured to independently control the first switch, the second switch and the transistor to rectify the input voltage and regulate an output voltage.