Asymmetrical pulse width modulated resonant DC/DC converter

Claim 1

An asymmetrical pulse width modulated constant frequency resonant DC/DC converter, comprising: bridged chopper means for converting a DC input to an AC of a constant high frequency; resonant circuit means connected to said bridged chopper means and including a series resonant capacitor and a resonant inductor for sending said high frequency AC to high frequency transformer means to generate a transformer secondary AC; and rectifier means connected to said high frequency transformer means to rectify said transformer secondary AC to produce a stable DC output; in that said bridged chopper means include at least two semiconductor switches, each having a snubber capacitor connected thereacross, said switches being alternately made conducting by respective gating pulse signals applied thereto at said constant high frequency, the duty cycles of said gating pulse signals and thus the duty cycles of the conduction of said switches being complementary with one another, and said duty cycles of said gating pulse signals being further adjustable to maintain said stable DC output.