A Soft-Switched Asymmetric Flying-Capacitor Boost Converter With Synchronous Rectification

被引：21

作者：

Lefevre, Guillaume ^{[1
]}

Mollov, Stefan V. ^{[1
]}

机构：

[1] Mitsubishi Elect Res Ctr Europe, F-35700 Rennes, France

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2016年 / 31卷 / 03期

关键词：

DC-DC power converters; efficiency; snubbers; soft-switching; zero-voltage zero-current switching (ZVZCS); DC-DC CONVERTER; INVERTER;

D O I：

10.1109/TPEL.2015.2438036

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The multilevel flying-capacitor boost converter was analyzed for asymmetric voltage operation-this permits loss optimization that takes advantage of different voltage class MOSFETs. A cost-motivated design of a suitable zero-voltage zero-current switching snubber is then developed that permits a great reduction of the inductor size. With the proposed snubber, synchronous rectification operation is compared to that of diode boost, with a particular attention to the contribution of nonlinear MOSFET parasitics. Experimental results from a 2-kW/30-kHz prototype justify the effectiveness of this solution with a conversion efficiency around 99% +/- 0.1% for a wide load range.

引用

页码：2200 / 2212

页数：13

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