PAPER SESSION 2: POWER STAGE TOPOLOGIES AND IMPLEMENTATION



Double-Boost DC-AC Converter with Sliding-Mode Control for Portable Audio


Gert B. Maizonave(1), Michael A. E. Andersen(1), Claus Kjśrgaard(1), Kristian L. Lund(2), Lars B. R. Hansen(2)
(1) Dept. of Electrical Engineering, Technical University of Denmark, Kongens Lyngby, Denmark. (2) Bang & Olufsen ICEpower a/s, Kongens Lyngby, Denmark


The double-boost topology is studied for operation as a dc-ac converter and single stage audio amplifier. A sliding mode controller is designed in order to achieve fast enough response for the whole audio frequency range. Symmetric, asymmetric, and interleaved operation modes are analyzed, as well as the advantages and disadvantages of achieving ZCS at all modes.


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