Basic DC-to-DC Converters

This paper generically classifies and unifies basic single-switch, single-inductor, DC-TO-DC converters. The boost and buck/boost flyback converters are shown to be supplementary, each being part of the same three-port terminal transfer function. Realizing one of these converters inherently results in the other as a fully functional composite output port. Three-port examination of the forward converter reveals it too combines two different converter voltage/current transfer functions. Generalized three-port analysis is used to specify the requirements of a realizable universal DC-TO-DC converter theoretically capable of producing isolated output DC and AC voltage and current in the range plusmninfin.