Patent ID: 7327589
Filing Date: 2008-02-05
Classification: H02M

Abstract:
1. A full-bridge circuit for a heat dissipation system having a control circuit which outputs a first control signal and a second control signal to the full-bridge circuit, the full-bridge circuit comprising: a first control line having a first switch and a third switch serially connected; a second control line parallel with the first control line, having a second switch and a fourth switch serially connected; and an induction coil having one terminal coupled between the first and third switches and the other terminal coupled between the second and fourth switches, wherein the ON/OFF states of the first and second switches are controlled by the first and second control signals respectively; wherein an input terminal of the third switch is coupled to a fifth switch in parallel and to a first resistor and a first driving voltage source in series, the ON/OFF state of the fifth switch is controlled by the first control signal, and the ON/OFF state of the third switch is controlled by the first driving voltage source and the first resistor according to the ON/OFF state of the fifth switch; and wherein an input terminal of the fourth switch is coupled to a six switch in parallel and to a second resistor and a second driving voltage source in series, the ON/OFF state of the sixth switch is controlled by the second control signal, and the ON/OFF state of the fourth switch is controlled by the second driving voltage source and the second resistor according to the ON/OFF state of the sixth switch.