A 120V-to-1.8V 91.5%-Efficient 36-W Dual-Inductor Hybrid Converter with Natural Soft-charging Operations for Direct Extreme Conversion Ratios
A 120V-to-1.8V 91.5%-Efficient 36-W Dual-Inductor Hybrid Converter with Natural Soft-charging Operations for Direct Extreme Conversion Ratios
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A%20120V-to-1.8V%2091.5%-效率%2036-W%20双电感%20Hybrid%20转换器%20with%20Natural%20软充电%20Operations%20for%20Direct%20Extreme%20Conversion%20比率
DOI：
10.1109/ecce.2018.8557854
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Le, Hanh-Phuc
中科院分区：
文献类型：
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作者：
Das, Ratul;Seo, Gab-Su;Le, Hanh-Phuc
本文提出了一种新的双电感混合变换器（DIHC），它能够在极大的电压转换比下实现高效的直接非隔离DC-DC转换。该变换器采用两个交错电感和一个开关电容器（SC）网络，带来了几个显著的拓扑优势。这种新拓扑的飞行电容器的电容可以达到最佳尺寸，以实现所有电容器的自然、完全的软充电。这种新颖的电容器软充电特性是这项工作的关键贡献，可以用来克服传统SC变换器遭受电容器硬充电损失的限制。转换器的拓扑结构及其工作原理在一个36w转换器样机中得到验证，该转换器的输入为40-120V，输出为0.9V-1.8V，电流负载为20A， 120v -1.8 v转换时的峰值效率为91.5%,120v -0.9 v转换时的峰值效率为87.3%。它在极端转换比下的优势和性能突破了负载点转换器的极限，降低了母线电压分布的复杂性和成本，并实现了更少的转换阶段，从而提高了数据中心和高性能数字系统的效率。
This paper presents a new dual inductor hybrid converter (DIHC) that is capable of efficient direct non-isolated DC-DC conversions with extremely large voltage conversion ratios. The converter employs two interleaved inductors and a switched-capacitor (SC) network to bring several significant topological benefits. Capacitance of the flying capacitors of this new topology can be optimally sized to achieve natural, complete soft-charging for all capacitors. This novel capacitor soft-charging feature is a key contribution of this work and can be exploited to overcome the limitations of conventional SC converters suffering from capacitor hard charging losses. The converter topology and its operation are verified in an 36-W converter prototype for 40-120V input to 0.9V-1.8V output up to 20A of current load that achieves peak efficiencies of 91.5% for 120V-to-1.8V and 87.3% for 120V-to-0.9V conversion. Its advantages and performance at extreme conversion ratios push the limit of point-of-load converters, reducing complexity and cost for bus voltage distributions, as well as enabling fewer conversion stages and thus higher efficiency for data centers and high-performance digital systems.
一种采用限流控制实现飞跨电容平衡的 48V:2V 飞跨电容多电平转换器
DOI：
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发表时间：
2017
期刊：
Applied Power Electronics Conference
影响因子：
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作者：
Jan S. Rentmeister;J. Stauth
通讯作者：
J. Stauth
采用阻抗控制网络和集成磁性结构的单级隔离式 48V 至 1.8V 负载点转换器
DOI：
10.1109/compel.2017.8013319
发表时间：
2017
期刊：
2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL)
影响因子：
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作者：
Ashish Kumar;Saad Pervaiz;K. Afridi
通讯作者：
K. Afridi