A High efficiency and High power density Asymmetrical Half-bridge Flyback Converter for Data Centers

Mingxiao Li, Ziwei Ouyang*, Michael A. E. Andersen

*Corresponding author for this work

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

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    Abstract

    The power consumption in data centers continues increasing, thereby pushing the converter to achieve high efficiency and high power density. This paper presents an asymmetrical half-bridge flyback converter for data center applications. Compared with an active clamp flyback converter, it functions as an isolated buck converter, and is more preferable for voltage step-down applications. The operating principle and the design considerations are included in this paper. An interleaving winding layout with uniformed current distributions is used for the planar transformer design. The built prototype satisfies an industrial standard low-profile sixteenth brick requirement, and achieves 94.9% peak efficiency and 468W/inch3 power density.
    Original languageEnglish
    Title of host publicationProceedings of IEEE 47th Annual Conference of IEEE Industrial Electronics
    Number of pages6
    PublisherIEEE
    Publication date2021
    ISBN (Print)9781665435543
    DOIs
    Publication statusPublished - 2021
    Event47th Annual Conference of the IEEE Industrial Electronics Society - Virtual Event, Toronto, Canada
    Duration: 12 Oct 202120 Oct 2021
    https://ieeeiecon.org/

    Conference

    Conference47th Annual Conference of the IEEE Industrial Electronics Society
    LocationVirtual Event
    Country/TerritoryCanada
    CityToronto
    Period12/10/202120/10/2021
    Internet address

    Keywords

    • Asymmetrical half-bridge flyback converter
    • Active clamp flyback converter
    • Planar transformer

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