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 Kj�rgaard(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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