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Content Provider | IEEE Xplore Digital Library |
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Author | Bor-Ren Lin Huann-Keng Chiang Chien-En Huang David Wang |
Copyright Year | 2005 |
Description | Author affiliation: Dept. of Electr. Eng., Nat. Yunlin Univ. of Sci. & Technol., Yunlin (Bor-Ren Lin; Huann-Keng Chiang; Chien-En Huang; David Wang) |
Abstract | This paper presents the system analysis, circuit design and implementation of an active clamp forward converter with synchronous rectifier. Compared with the conventional forward converter, there is one auxiliary switch in the active clamp forward converter to recycle the energy stored in the transformer leakage in order to minimize the spike voltage at the transformer primary side. Therefore the voltage stress of main switch can be reduced. The resonant circuit based on the output capacitance and leakage inductance of the transformer will achieve zero voltage switching turn-on for both main and auxiliary switches to increase the circuit efficiency. The synchronous rectifier is used at the secondary side to further reduce the conduction losses. The operation principles of the active clamp forward converter are analyzed in detail and the circuit performance is compared with the conventional forward converter. The design procedure and example of active clamp forward converter are presented. Finally experimental results are presented for a converter with an ac input voltage of $90~130V_{rms},$ an output voltage of 5 V/20 A and operating at switching frequency of 150 kHz are provided to verify the zero voltage switching at turn-on. |
Starting Page | 1 |
Ending Page | 6 |
File Size | 346546 |
Page Count | 6 |
File Format | |
ISBN | 0780393112 |
DOI | 10.1109/TENCON.2005.300994 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2005-11-21 |
Publisher Place | Australia |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Clamps Rectifiers Switches Zero voltage switching Switching converters RLC circuits Circuit analysis Circuit synthesis Recycling Stress |
Content Type | Text |
Resource Type | Article |
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