Performance evaluation of direct drive high voltage Gallium-Nitride devices in LLC series resonant converters

Sheng-yang Yu
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引用次数: 4

Abstract

This paper focuses on performance evaluation of direct drive high voltage Gallium-Nitride (GaN) devices in a high frequency LLC series resonant converter (LLC-SRC). A comparison between synchronous drive and direct drive high voltage (HV) Cascode GaN device has been made. Zero reverse recovery charge and integrated protections make direct drive HV Cascode GaN device attractive to high frequency LLC-SRCs. Dead-time related design considerations of high frequency LLC-SRCs are also discussed. LLC-SRC prototypes using direct drive HV Cascode GaN device have been built. 97.7% peak efficiency is achieved with direct drive HV Cascode GaN device in a 390V to 12V conversion and over 400kHz switching frequency.
LLC串联谐振变换器中直接驱动高压氮化镓器件的性能评价
本文研究了直接驱动高压氮化镓器件在高频LLC串联谐振变换器(LLC- src)中的性能评价。对同步驱动和直接驱动的高压Cascode GaN器件进行了比较。零反向恢复电荷和集成保护使直接驱动HV Cascode GaN器件对高频llc - src具有吸引力。本文还讨论了与死区时间相关的高频plc - src设计考虑。使用直接驱动HV Cascode GaN器件的LLC-SRC原型已经建立。直接驱动HV Cascode GaN器件在390V至12V转换和超过400kHz的开关频率下实现97.7%的峰值效率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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