NDLI: The zero Voltage switching (ZVS) critical conduction mode (CRM) buck Converter With tapped-inductor

Content Provider	IEEE Xplore Digital Library
Author	Jong-Hu Park Bo-Hyung Cho
Copyright Year	1986
Abstract	The critical conduction mode (CRM) control has some disadvantages such as the increase of switching loss and conduction loss of the main switch at extreme high/low voltage conversion applications. In this paper, a CRM buck converter with tapped inductor is proposed to overcome these problems. In this converter, both the active switch and the diode have soft switching operation by the resonance between the switch parasitic capacitors and the filter inductor. Furthermore, the peak current of the main switch is reduced by tapped inductor operation, thus the conduction loss and switching loss levels of the main switch are lowered. Consequently, this tapped inductor scheme with CRM control alleviates the severe power stress and enhances device utilization. For the proposed converter evaluation, this paper provides the operation analysis and design procedures of the converter, and also presents the hardware verification for a 50-W prototype operating at maximum 70 kHz. Finally, a new topology family derived by combination of CRM operation with the basic tapped-inductor converter is included.
Sponsorship	IEEE Power Electronics Society
Starting Page	762
Ending Page	774
Page Count	13
File Size	1196296
File Format	PDF
ISSN	08858993
Volume Number	20
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Zero voltage switching Buck converters Switches Inductors Switching loss Voltage control Low voltage Switching converters Diodes Resonance topology family Buck converter critical conduction mode (CRM) soft switching
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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