Low Power Very High Frequency Switch-Mode Power Supply with 50 V Input and 5 V Output

Mickey Pierre Madsen, Arnold Knott, Michael A. E. Andersen

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    Abstract

    This paper presents the design of a resonant converter with a switching frequency in the very high frequencyrange (30-300 MHz), a large step down ratio (10 times) and low output power (1 W). Several different invertersand rectifiers are analyzed and compared. The class E inverter and rectifier are selected based on complexity andefficiency estimates. Three different power stages are implemented; one with a large input inductor, one with a switch with small capacitances and one with a switch with low on resistance. The power stages are designed with the same specifications and efficiencies from 60:7􀀀82:9% are achieved
    Original languageEnglish
    JournalIEEE Transactions on Power Electronics
    Volume29
    Issue number12
    Pages (from-to)6569-6580
    ISSN0885-8993
    DOIs
    Publication statusPublished - 2014

    Keywords

    • Resonant power conversion
    • VHF circuits
    • DC-DC power conversion
    • Switched mode power supplies
    • Rectifiers
    • Inverters

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