Extremely High Q-factor Inductor for Loss Reduction in Power Converters for MHz Range
Konferenz: PCIM Conference 2025 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
06.05.2025 - 08.05.2025 in Nürnberg, Germany
doi:10.30420/566541056
Tagungsband: PCIM Conference 2025
Seiten: Sprache: EnglischTyp: PDF
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Autoren:
Zajc, Franci; Zajc, Anja; Zajc Zdesar, Ivi; Zajc, Franc
Inhalt:
In the terms of the green transition of the worldwide spread power conversion an inductor introducing a significant loss reduction in medium-power conversion especially for frequencies up to 1.5 MHz is presented. By achieving an extremely high Q-factor of over 500 despite having a minuscule volume said inductor withstands an outstandingly high ripple current enabling discontinuous mode operation and zero-voltage condition of the power converter and consequently decreases switching losses. Design considerations are discussed and supported by a detailed analysis and magnetic simulations. Finally, theoretical considerations are verified by tests of a prototype SMD inductor built for a space application.