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A high-power high-frequency ZCS-ZVS-PWM buck converter using a feedback resonant circuit

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2 Author(s)
de Freitas, L.C. ; Univ. Federal de Uberlandia, Brazil ; Gomes, P.R.C.

A buck DC-DC power converter using a novel lossless commutation cell for high switching frequency and high power operation is presented. The proposed cell consists of a main switch and an auxiliary switch, with ZVS (zero voltage switched) and ZCS (zero current switched) switching characteristics, respectively. The converter control using this cell is realized by the PWM technique, with constant switching frequency operation. The complete operation principles, theoretical analysis, relevant equations, state space phase, simulation, and experimental results for the buck converter are presented

Published in:

Power Electronics Specialists Conference, 1993. PESC '93 Record., 24th Annual IEEE

Date of Conference:

20-24 Jun 1993