Patent ID: 6344979
Filing Date: 2002-02-05
Classification: H02M,Y02B

Abstract:
A DC-to-DC converter comprising:a square wave generator for generating a sequence of output voltages having a waveform of square wave; a resonant tank connected to said square wave generator comprising a series capacitor connected to a series inductor and a parallel inductor; a transformer having a primary side connected in series with said series inductor and connected in parallel to said parallel inductor; said transformer further including a secondary side for connecting to a rectifying circuit for providing a rectified DC voltage to an output load circuit; said rectifier circuit further comprising a filtering capacitor for filtering said rectified DC voltage outputted to said output load circuit; said series capacitor functioning with said series inductor to provide a first characteristic resonant frequency represented by Æ’s, and said series capacitor functioning with said series inductor and said parallel inductor to provide a second characteristic resonant frequency represented by Æ’m wherein Æ’s>Æ’m; said converter operating in the frequency range that is higher than said second frequency Æ’m.