Patent ID: 6288919
Filing Date: 2001-09-11
Classification: H02M,Y02B

Abstract:
An AC/DC converter, comprising:a) resonant components connected in series to form a series resonant circuit;b) a transformer having a primary winding with a first predetermined number of turns and a center tap to a secondary winding with a second predetermined number of turns, the resonant circuit and the primary winding of the transformer being connected in series, and the center tap of the secondary winding being connected to an output filter and a load;c) two controlled switches regulated to control output voltage of the AC/DC converter, the two controlled switches being, respectively connected to two ends of the secondary winding, a drain of each of the two controlled switches being respectively connected to opposite ends of the secondary winding, and respective sources of the two controlled switches being interconnected; andd) means respectively connected across the two controlled switches for providing a current path around the two controlled switches.