A 95%-Efficient 48V-to-1V/10A VRM Hybrid Converter Using Interleaved Dual Inductors

A 95%-Efficient 48V-to-1V/10A VRM Hybrid Converter Using Interleaved Dual Inductors
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A%2095%-效率%2048V-to-1V/10A%20VRM%20Hybrid%20转换器%20使用%20Interleaved%20Dual%20电感器

DOI:
10.1109/ecce.2018.8557715
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发表时间:
2018
期刊:
2018 IEEE Energy Conversion Congress and Exposition (ECCE
影响因子:
--
通讯作者:
Le, Hanh-Phuc
Le, Hanh-Phuc
中科院分区:
--
文献类型:
--
作者:
Seo, Gab-Su;Das, Ratul;Le, Hanh-Phuc

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本文提出了一种新型48V-1V混合式转换器。该变流器利用两个交错电感实现对悬浮电容的完全软充电,从而有效地支持高输出电流。与最近报道的混合Dickson转换器相比,这种双电感混合转换器(DIHC)具有更少的开关数量和更有效的开关利用率,从而使等效输出阻抗更小,从而显著降低了导通损耗。实验结果验证了该转换器的工作原理和优点,在一台300 kHz20W的样机上实现了95.02%的峰值效率和225 W/In3的功率密度。其优势和性能为数据中心和高性能数字系统等需要大转换比和高输出电流的应用提供了良好的候选转换器架构。
This paper presents a new 48 V-to-1 V hybrid converter. The converter utilizes two interleaved inductors to achieve complete soft-charging of flying capacitors to efficiently support high output currents. This dual inductor hybrid converter (DIHC) features fewer number of switches and more effective switch utilization than a recently reported hybrid Dickson converter, leading to substantially less conduction losses presented by a smaller equivalent output impedance. Experimental results verify the converter's operation principles and advantages in a 300-kHz 20-W prototype achieving 95.02% peak efficiency and 225 W/in3 power density. Its advantages and performance promise a good candidate converter architecture for applications that require large conversion ratios and high output currents, such as data centers and high-performance digital systems.
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