An integrated 80V 45W class-D power amplifier with optimal-efficiency-tracking switching frequency regulation

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    Abstract

    Piezoelectric actuators are widely used in smart materials for vibration and noise control, precision actuators, etc. [1]. These actuators are largely capacitive and the reactive power applied on them can go to several tens of Watts. Highvoltage, high-power class-D amplifiers [2]-[5] are ideal drivers for such loads, because of their high power efficiency. Preferably, efficiency should be high both at maximum power and at average output power. Obtaining high power efficiency over the full output power range of a class-D amplifier is the main focus of this work.
    Original languageEnglish
    Title of host publicationIEEE International Solid-State Circuits Conference, ISSCC 2014
    Place of PublicationPiscataway, NJ
    PublisherIEEE
    Pages286-287
    Number of pages2
    ISBN (Print)978-1-4799-0918-6
    DOIs
    Publication statusPublished - 9 Feb 2014
    EventIEEE International Solid-State Circuits Conference, ISSCC 2014 - San Francisco, United States
    Duration: 9 Feb 201413 Feb 2014

    Publication series

    NameDigest of Technical Papers of the Solid State Circuits Conference
    PublisherIEEE
    ISSN (Print)0193-6530

    Conference

    ConferenceIEEE International Solid-State Circuits Conference, ISSCC 2014
    Abbreviated titleISSCC
    CountryUnited States
    CitySan Francisco
    Period9/02/1413/02/14

    Keywords

    • EWI-24696
    • IR-90620
    • METIS-304088

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  • Cite this

    Ma, H., van der Zee, R. A. R., & Nauta, B. (2014). An integrated 80V 45W class-D power amplifier with optimal-efficiency-tracking switching frequency regulation. In IEEE International Solid-State Circuits Conference, ISSCC 2014 (pp. 286-287). (Digest of Technical Papers of the Solid State Circuits Conference). Piscataway, NJ: IEEE. https://doi.org/10.1109/ISSCC.2014.6757436