Three-Switch Active-Clamp Forward Converter With Low Switch Voltage Stress and Wide ZVS Range for High-Input-Voltage Applications

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In low-to-medium power applications, an active-clamp forward (ACF) converter is popular for its simple structure and zero-voltage switching (ZVS) capability. However, the high voltage stress on switches can be a burden in high-input-voltage applications. To relieve this, a three-switch ACF (TS-ACF) converter, which employs two main switches for a forward converter and one auxiliary switch for an active-clamp circuit (ACC), is proposed in this paper. With a repositioned ACC, all the switches of TS-ACF converter have relatively low voltage stress compared to the conventional one. In addition, one of the main switches always ensures ZVS during the transformer reset. Consequently, the TS-ACF converter can be promising for high-input-voltage applications with high efficiency.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2010-04
Language
English
Article Type
Article
Keywords

SYNCHRONOUS RECTIFIER; DESIGN CONSIDERATION; HIGH-EFFICIENCY; TRANSIENT

Citation

IEEE TRANSACTIONS ON POWER ELECTRONICS, v.25, pp.889 - 898

ISSN
0885-8993
DOI
10.1109/TPEL.2009.2036620
URI
http://hdl.handle.net/10203/97538
Appears in Collection
EE-Journal Papers(저널논문)
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