750w高效软开关12v离线转换器

2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI:10.1109/APEC.2009.4802864

B. Bucheru, I. Jitaru

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引用次数: 0

摘要

本文介绍了一种创新的离线低轮廓转换器设计，该转换器在标称输入范围内以95%-96%的效率提供750 W的功率，采用高频零电压开关(ZVS)和零电流开关(ZCS)的变频拓扑结构用于主开关。提出了高频高压软开关的理论考虑和实际应用结果。设计的目标是保持多层PCB板的合理温升，同时以更小的体积和低成本提供750 W的功率。与标准的两级400V至12V功率转换器相比，最终产品的功率密度增加了两倍以上，并且在125 × 70 mm2的占地面积上优于其他一级解决方案，只有18 mm的外形。

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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750 W High Efficiency and Soft-Switching Off-Line 12 V Converter

The paper presents an innovative off-line low profile converter design that delivers 750 W of power at 95%-96% efficiency for nominal input range, using variable frequency topology with high frequency zero voltage switching (ZVS) and zero current switching (ZCS) for primary switchers. Theoretical considerations and practical results are presented for high frequency and high voltage soft-switching. The goal of the design is to maintain a reasonable temperature rise of the multi-layer PCB board while delivering 750 W power in a reduced volume and low cost. The resulting product increases more than twice the power density compared to the standard two stages 400V to 12V power converters and outperforms other one stage solutions in a 125 × 70 mm2 footprint with only a 18 mm profile.

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2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition

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