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Abstract
This article presents an optimization strategy for enhancing the efficiency and power density of a GaN-based dc–dc converter, tailored for different applications with a wide input voltage range regulation. The optimization employs air-core inductors and implements a variable switching frequency modulation method to enable zero voltage switching turn-on for GaN transistors, facilitating greater flexibility in frequency adjustment and improved thermal management. Additionally, a specialized thermal model is introduced for the interleaved Buck-Boost GaN transistor-based dc–dc converter, accounting for the presence of a natural convection heatsink. In the conclusion, theoretical discussions transition to practical implementation through the testing of a laboratory prototype. This prototype achieves high efficiency (around 99%), along with power densities of >17.5 kW/L and 6 kW/kg when equipped with a natural convection (without airflow) heatsink. It features a wide input voltage range (110–450 V), a constant output voltage of 350 V, variable switching frequency (18–304 kHz) and supports up to 9 kW output power.
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Authors (4)
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Parham Mohseni
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Matthias Kasper
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Gerald Deboy
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Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach dostępnych w wersji elektronicznej [także online]
- Published in:
-
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
pages 1 - 15,
ISSN: 0278-0046 - Language:
- English
- Publication year:
- 2025
- Bibliographic description:
- Mohseni P., Husev O., Kasper M., Deboy G., Design Optimization for Enhancing the Power Density and Efficiency for GaN-Based DC–DC Converter, IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2025,10.1109/TIE.2025.3552273
- DOI:
- Digital Object Identifier (open in new tab) 10.1109/tie.2025.3552273
- Sources of funding:
-
- Free publication
- Verified by:
- Gdańsk University of Technology
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