Title :
A high-power high-frequency ZCS-ZVS-PWM buck converter using a feedback resonant circuit
Author :
De Freitas, Luiz Carlos ; Gomes, Paulo Roberto Coelho
Author_Institution :
Univ. Federal de Uberlandia, Brazil
Abstract :
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
Keywords :
DC-DC power convertors; PWM power convertors; circuit feedback; commutation; network analysis; resonant power convertors; state-space methods; switching circuits; HF; PWM; ZCS; ZVS; auxiliary switch; buck DC-DC power converter; feedback resonant circuit; lossless commutation; main switch; operation principles; relevant equations; simulation; state space phase; switching frequency; theoretical analysis; zero current switched; zero voltage switched; Buck converters; DC-DC power converters; Equations; Pulse width modulation; Pulse width modulation converters; Switches; Switching converters; Switching frequency; Zero current switching; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 1993. PESC '93 Record., 24th Annual IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-1243-0
DOI :
10.1109/PESC.1993.471905
