Two Stage GaN Transistor-Based Isolated Class e DC-DC Converter
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所属单位：自动化学院
发表刊物：Workshop Wide Bandgap Power Devices Appl. Asia, WiPDA Asia
摘要：On-Off control is usually adopted to regulate the output voltage of the isolated Class E DC-DC converter when the switching frequency increases up to multi-megahertz. In this control scheme, the parameters are usually designed at the lowest input voltage to ensure enough output power capacity. Unfortunately, it is revealed that with the increase of the input voltage, the conversion efficiency would decrease greatly and the voltage stress would increase under On-Off control. To solve this problem, a two stage isolated Class E DC-DC converter structure is proposed in this paper. In the two stage structure, a voltage step-down circuit is introduced to help regulate the input voltage of the isolated Class E DCDC converter. Accordingly, the conversion efficiency could increase and the voltage stress would decrease. An experimental comparison between two stage structure with Buck circuit as step-down circuit and single stage structure is conducted. The experiment results show that the two stage structure could help improve the conversion efficiency by 5.10% and at the same time, reduce the voltage stress by 54V. © 2018 IEEE.
是否译文：否
发表时间：2018-05-01
合写作者：Dai, Jiandong,阮新波
通讯作者：汪丽影