Patent ID: 7092263

Claim:
A DC—DC converter for converting an input voltage into a first output voltage, comprising: a first voltage output unit, comprising: a first switch, having an input terminal for receiving the input voltage, an output terminal, and a gate; and a first capacitor, having a first terminal coupled to the gate of the first switch, and a second terminal coupled to the output terminal of the first switch; a first inverter, for receiving the input voltage and coupled to the first voltage output unit; a first energy-storing unit, comprising: a second switch, having an input terminal coupled to the input terminal of the first switch, a gate coupled to the output terminal of the first switch, and an output terminal; and a second capacitor, having a first terminal coupled to the first inverter, and a second terminal coupled to the output terminal of the second switch; and a first selecting switch, having an input terminal coupled to the first energy-storing unit, an output terminal for outputting the first output voltage, and a gate coupled to the first voltage output unit.