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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. ; Universidade Federal de Uberlandia, Brazil ; Coelho Comes, P.R.

This paper presents a buck DC-to-DC power converter using a novel lossless commutation cell for high switching frequency and high power operation. The proposed cell consists of a main and auxiliary switches, with ZVS and ZCS switching characteristics, respectively. The power 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

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Power Electronics, IEEE Transactions on  (Volume:10 ,  Issue: 1 )