Investigation of crosstalk in self oscillating switch mode audio power amplifier

Thomas Haagen Birch, Rasmus Overgaard Ploug, Niels Elkjær Iversen, Arnold Knott

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    Self oscillating switch mode power ampliers are known to be susceptible to interchannel disturbances also known as crosstalk. This phenomenon has a signicant impact on the performance of an amplier of this type. The goal of this paper is to investigate the presence and origins of crosstalk in a two channel self oscillating switch mode power amplier (class D). A step by step reduction of elements in an
    amplier built for this task, is used for methodically determining the actual presence and origins of crosstalk. The investigation shows that the crosstalk is caused by couplings in the self oscillating pulse width modulation circuits, but also that the output lter has a major impact on the level of crosstalk.
    Original languageEnglish
    Title of host publicationProceedings of the 132nd AES Convention
    Number of pages8
    PublisherAudio Engineering Society
    Publication date2012
    Publication statusPublished - 2012
    EventAES 132nd Convention - Budapest Congress & World Trade Center, Budapest, Hungary
    Duration: 26 Apr 201229 Apr 2012


    ConferenceAES 132nd Convention
    LocationBudapest Congress & World Trade Center
    Internet address


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