GaN Devices in Resonant LLC Converters: System-level considerations
- 3 March 2015
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Power Electronics Magazine
- Vol. 2 (1), 36-41
- https://doi.org/10.1109/mpel.2014.2381456
Abstract
Resonant or soft-switching converters are common in the high-voltage (400?600 V) space to reduce form factor while maintaining high efficiency. These supplies target topologies such as the LLC, phase-shifted full bridge, and two-switch forward with power levels between 400 W and 5 kW. The LLC converter is a popular topology in this space as it can achieve zero-voltage switching (ZVS) over a wide load range [1]. This article is focused on LLC converters with a 350?400-V input range and an isolated 12 or 48 VDC output. Applications include the second stage of traditional ac/dc supplies for server and telecom markets, electric vehicle (EV) bus converters, and board-mounted supplies for the high-voltage dc distribution trend in rack-mount environments.Keywords
This publication has 8 references indexed in Scilit:
- New electrical overstress and energy loss mechanisms in GaN cascodesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2015
- Avoiding Si MOSFET avalanche and achieving true zero-voltage-switching for cascode devicesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2014
- Advantages of GaN in a high-voltage resonant LLC converterPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2014
- Commercialization of high 600V GaN-on-silicon power HEMTs and diodesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2013
- Evaluation and application of 600V GaN HEMT in cascode structurePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2013
- Evaluation and comparison of silicon and gallium nitride power transistors in LLC resonant converterPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2012
- Analysis of MOSFET failure modes in LLC resonant converterPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2009
- A family of high power density bus convertersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004