Silicon MOSFETs Evaluation in Auxiliary DC-DC Converters for HEV/EV Applications

S. Musumeci, F. Scrimizzi, S. Rizzo, F. Fusillo, G. Longo
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Abstract

The paper deals with the last generation silicon MOSFETs application in an auxiliary power supply for HEV and EV applications. In the paper, the converter high- efficiency target is achieved by a suitable selection of the MOSFETs in the primary side and secondary side of an isolated DC-DC converter applied to interface the high-voltage to the low-voltage battery pack. The primary side is a high voltage full-bridge topology with super-junction MOSFETs, while the secondary is arranged with a low voltage trench-gate MOSFETs in synchronous rectifier operation. Experimental evaluation of the primary and secondary side of MOSFETs devices has been carried out to give correct guidelines to choose the power switches devices. Furthermore, an active clamp stage circuit on the secondary side is evaluated to reduce the drain-source MOSFET voltage spike.
用于HEV/EV应用的辅助DC-DC变换器中的硅mosfet评估
本文讨论了新一代硅mosfet在混合动力汽车和电动汽车辅助电源中的应用。本文通过在隔离型DC-DC变换器的一次侧和二次侧选择合适的mosfet来实现转换器的高效率目标,该变换器用于连接高压和低压电池组。初级侧为高压全桥拓扑,配有超结mosfet,次级侧为同步整流操作的低压沟栅mosfet。对mosfet器件的一次侧和二次侧进行了实验评估,为选择功率开关器件提供了正确的指导。此外,在二次侧评估了一个有源钳级电路,以减少漏源型MOSFET电压尖峰。
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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