Determination of over current protection thresholds for class D audio amplifiers

Flemming Nyboe, L Risbo, Pietro Andreani

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

    929 Downloads (Pure)

    Abstract

    Monolithic class-D audio amplifiers typically feature built-in over current protection circuitry that shuts down the amplifier in case of a short circuit on the output speaker terminals. To minimize cost, the threshold at which the device shuts down must be set just above the maximum current that can flow in the loudspeaker during normal operation. The current required is determined by the complex loudspeaker impedance and properties of the music signals played. This work presents a statistical analysis of peak output currents when playing music on typical loudspeakers for home entertainment.
    Original languageEnglish
    Title of host publicationProceedings of 23rd NORCHIP Conference
    PublisherIEEE
    Publication date2005
    Pages125-128
    Article number1597005
    ISBN (Print)1-4244-0064-3
    DOIs
    Publication statusPublished - 2005
    Event2005 IEEE 23rd NORCHIP Conference - Oulu, Finland
    Duration: 21 Nov 200522 Nov 2005
    https://ieeexplore.ieee.org/xpl/conhome/10643/proceeding

    Conference

    Conference2005 IEEE 23rd NORCHIP Conference
    Country/TerritoryFinland
    CityOulu
    Period21/11/200522/11/2005
    Internet address

    Bibliographical note

    Copyright: 2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

    Fingerprint

    Dive into the research topics of 'Determination of over current protection thresholds for class D audio amplifiers'. Together they form a unique fingerprint.

    Cite this