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A switched-mode power supply using a boost-flyback converter and an interleaved soft-switching forward topology

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6 Author(s)
Carlos A. Gallo ; Universidade Federal de Uberlândia, Faculdade de Engenharia Mecânica, Brazil ; Fernando L. Tofoli ; Ernane A. A. Coelho ; Luiz C. de Freitas
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This work presents the operation and design of a high power factor power supply rated at 2 kW operating at high frequency. Good power factor is obtained using an AC-DC interleaved boost-flyback converter as a preregulator circuit. The front end stage is associated with a nondissipative snubber operating at 100 kHz and without commutation losses. The same nondissipative snubber is associated with the DC-DC interleaved forward topology switching at 100 kHz.

Published in:

2008 IEEE Power Electronics Specialists Conference

Date of Conference:

15-19 June 2008