Patent ID: 8885366

Claim:
A DC-to-DC voltage regulator having input and output terminals, the voltage regulator comprising: a push-pull DC-to-DC converting unit comprising first active switch and second active switch and configured to convert a voltage V 1 at the input terminal to a square-wave signal of voltage; an isolation transformer having two primary windings and one secondary winding, wherein the primary windings are coupled to the first and second active switches, respectively; a resonant unit comprising a capacitor and first inductor and second inductor, the first inductor coupled to the secondary winding of the isolation transformer; third active switch and fourth active switch coupled to a terminal of the second inductor; first rectifier and second rectifier coupled to the third active switch and fourth active switch, respectively; and an output stage of full-wave rectification comprising four passive switches and a plurality of connection joints and configured to provide a voltage V 2 at the output terminal, wherein the connection joints are coupled to the resonant unit, the isolation transformer, and the first and second rectifiers, respectively.