Mapping of theory of reverse recovery losses to the duty cycle distribution of audio signals with a double pulse tester

Andreas S. Petersen, Niels E. Iversen, Arnold Knott

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

    Abstract

    Switch-mode power amplifiers have become the conventional choice for audio amplification due to their very high efficiency and negligible THD+N performance. This paper proposes a new method to determine the reverse recovery loss theoretically. The Spice model from the manufacture is simulated with a Double pulse tester in LTspice. Mapping the reverse recovery behaviour for different currents and time periods allows it to be fitted to a model. The fitted model is used to estimate the reverse recovery loss in a Class-D audio amplifier power stage. The conventional model shows a 16 times larger loss compared to the fitted model for a worst case comparison.
    Original languageEnglish
    Title of host publicationProceedings of 149th Audio Engineering Society Convention 2020
    PublisherAudio Engineering Society
    Publication date2020
    Publication statusPublished - 2020
    Event149th Audio Engineering Society Convention - Virtual event
    Duration: 21 Oct 202024 Oct 2020
    Conference number: 149

    Conference

    Conference149th Audio Engineering Society Convention
    Number149
    LocationVirtual event
    Period21/10/202024/10/2020

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