Conference paper Open Access
A High-Efficiency 1 MHz 65 W GaN-Based LLC Resonant DC-DC Converter
Ammar, Ahmed M.; Nour, Yasser; Knott, Arnold
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.
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CPERE_2019_A-High-Efficiency-1-MHz-65W-GaN-Based-LLC-Resonant-DC-DC-Converter.pdf
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- Publication date:
- October 25, 2019
- DOI:
-
- Keyword(s):
- resonant power conversion dc-dc converters offline converters wide bandgap semiconductors zero voltage switching (ZVS)
- Grants:
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European Commission:
- LEDLUM - TINY LIGHT ENGINE FOR LARGE SCALE LED LIGHTING (731466)
- Meeting:
- 2019 IEEE Conference on Power Electronics and Renewable Energy (CPERE), Aswan, Egypt, 23-25 October 2019
- Related identifiers:
- New versions
- Communities:
- License (for files):
- Creative Commons Attribution 4.0 International