Patent ID: 6498463
Filing Date: 2002-12-24
Classification: H02M,Y02B

Abstract:
A boost converter comprising:an input coupled to an input inductor; a main switch coupled to said input inductor that conducts currents through said input inductor to store energy in said input inductor; and a resonant circuit coupled to said main switch for conducting currents from said input to an output of said boost converter, the resonant circuit comprising: a first series circuit including a first auxiliary switch and a second auxiliary switch coupled to said main switch; a second series circuit including a first output capacitor and a second output capacitor in parallel with said first series circuit; and a resonant inductor interposed between said first series circuit and said second series circuit to form a first discharge loop and a second discharge loop to make said main switch turn on and off under a substantial zero voltage; wherein both said first auxiliary switch and said second auxiliary switch are turned on and off under a substantial zero current circumstance.