Basic DC-to-DC Converters

B.W. Williams, IEEE Power Electronics Society (Funder)

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)387-401
Number of pages14
JournalIEEE Transactions on Power Electronics
Issue number1
Publication statusPublished - Jan 2008


  • dc-dc power convertors
  • power convertors
  • inductors
  • switching convertors
  • transfer functions


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