October 25, 2019 Conference paper Open Access

Ammar, Ahmed M.; Nour, Yasser; Knott, Arnold

DCAT Export

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        <foaf:name>Ammar, Ahmed M.</foaf:name>
        <foaf:givenName>Ahmed M.</foaf:givenName>
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        <foaf:name>Nour, Yasser</foaf:name>
        <foaf:givenName>Yasser</foaf:givenName>
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    <dct:title>A High-Efficiency 1 MHz 65 W GaN-Based LLC Resonant DC-DC Converter</dct:title>
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    <dcat:keyword>resonant power conversion</dcat:keyword>
    <dcat:keyword>dc-dc converters</dcat:keyword>
    <dcat:keyword>offline converters</dcat:keyword>
    <dcat:keyword>wide bandgap semiconductors</dcat:keyword>
    <dcat:keyword>zero voltage switching (ZVS)</dcat:keyword>
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    <dct:description>&lt;p&gt;This paper presents an LLC resonant DC-DC converter for single-phase offline converters. A 1 MHz 400 V to 48 V prototype employing gallium nitride (GaN) switching devices is designed and implemented. A high-frequency magnetic material is used for the magnetic devices, with the resonant inductor integrated in the transformer. The converter operation is based on soft switching and achieves up to 65 W of output power with a peak efficiency of 96 % at full-load. Inherent load regulation capability is demonstrated from 5 to 65 W of power with fixed switching frequency, while line regulation for 360 to 440 V input is verified with a frequency modulation range of 816 to 1256 KHz respectively.&lt;/p&gt;</dct:description>
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