NDLI: An isolated full bridge boost converter with active soft switching

Content Provider	IEEE Xplore Digital Library
Author	Chongming Qiao Smedley, K.M.
Copyright Year	2001
Description	Author affiliation: Dept. of Electr. & Comput. Eng., California Univ., Irvine, CA, USA (Chongming Qiao)
Abstract	The isolated full-bridge boost power converter is attractive in applications such as single-stage power factor correction (PFC) with isolation requirement, or bi-directional DC-DC power converters. It features several merits such as multiple-output capability with one shared choke, single-stage energy processing and good input current shaping ability. But its major disadvantage is that the transformer leakage inductance causes high transient voltage across the bridge switches, which increases the switching rating and decreases the reliability. In this paper, an active soft switching circuit is proposed for the isolated full-bridge boost converter. The proposed soft switching circuit clamps the voltage across the full bridge, transfers the energy in the leakage inductance to the load, and provides zero voltage turn-off for all the main switches. Furthermore, the auxiliary switch features zero current turn-on and zero voltage turn-off. Therefore, the efficiency is improved. The analysis is verified by experimental results.
Starting Page	896
Ending Page	903
File Size	584354
Page Count	8
File Format	PDF
ISBN	0780370678
ISSN	02759306
DOI	10.1109/PESC.2001.954233
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-06-17
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Switching converters Switches Bridge circuits Switching circuits Zero voltage switching DC-DC power converters Inductance Power factor correction Bidirectional control Inductors
Content Type	Text
Resource Type	Article

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