Patent ID: 8339812

Claim:
A resonant power converter, comprising: a transformer having primary and secondary windings; a primary side switching bridge arrangement including at least two switches switchable at a switching frequency to drive the primary winding of said transformer, said primary side switching bridge arrangement including at least one decoupling capacitor; and a secondary side rectifying and filtering stage coupled to the secondary winding of said transformer, wherein said secondary side rectifying and filtering stage includes a current doubler with at least one inductor, wherein said at least one decoupling capacitor and said at least one inductor in said current doubler comprise a resonant tank circuit having a resonant frequency range encompassing said switching frequency, whereby parasitic magnetizing and leakage inductances of said transformer are higher and lower, respectively, than an inductance values of said at least one inductor in said current doubler as seen from the primary winding and said converter exhibits a gain defined by a position of said switching frequency within said resonant frequency range.