Utilization of non-linear converters for audio amplification

Niels Elkjær Iversen, Thomas Birch, Arnold Knott

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    Class D amplifiers fits the automotive demands quite well. The traditional buck-based amplifier has reduced both the cost and size of amplifiers. However the buck topology is not without its limitations. The maximum peak AC output voltage produced by the power stage is only equal the supply voltage. The introduction of non-linear converters for audio amplification defeats this limitation. A Cuk converter, designed to deliver an AC peak output voltage twice the supply voltage, is presented in this paper. A 3V prototype has been developed to prove the concept. The prototype shows that it is possible to achieve an peak AC output voltage twice the supply voltage but also reveals some of the major obstacles and challenges which is also discussed.
    Original languageEnglish
    Title of host publicationProceedings of the AES 48th International Conference
    Number of pages9
    PublisherAudio Engineering Society
    Publication date2012
    Publication statusPublished - 2012
    EventThe AES 48th International Conference - Munich, Germany
    Duration: 21 Sept 201223 Sept 2012


    ConferenceThe AES 48th International Conference


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