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http://dx.doi.org/10.6113/JPE.2016.16.5.1639

A Family of Magnetic Coupling DC-DC Converters With Zero-Voltage-Switching Over Wide Input Voltage Range and Load Variation  

Chen, Guipeng (College of Electrical Engineering, Zhejiang University)
Dong, Jie (College of Electrical Engineering, Zhejiang University)
Deng, Yan (College of Electrical Engineering, Zhejiang University)
Tao, Yong (College of Electrical Engineering, Zhejiang University)
He, Xiangning (College of Electrical Engineering, Zhejiang University)
Wang, Yousheng (College of Electrical Engineering, Zhejiang University)
Publication Information
Journal of Power Electronics / v.16, no.5, 2016 , pp. 1639-1649 More about this Journal
Abstract
This paper presents a family of soft-switching DC-DC converters with a simple auxiliary circuit consisting of a coupled winding and a pair of auxiliary switch and diode. The auxiliary circuit is activated in a short interval and thus the circulating conduction losses are small. With the auxiliary circuit, zero-voltage-switching (ZVS) and zero-current-switching are achieved for the main and auxiliary switches respectively, over wide input voltage range and load variation. In addition, the reverse-recovery problem of diodes is significantly alleviated because of the leakage inductor. Furthermore, the coupled inductor simultaneously serves as the main and auxiliary inductors, contributing to reduced magnetic component in comparison with the conventional zero-voltage-transition (ZVT) converters. Experimental results based on a 500 W prototype buck circuit validate the advantages and effectiveness of the proposed magnetic coupling ZVS converter.
Keywords
DC-DC converters; Magnetic coupling; Zero-current-switching (ZCS); Zero-voltage-switching (ZVS);
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Times Cited By KSCI : 4  (Citation Analysis)
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