Title :
A high-power high-frequency ZCS-ZVS-PWM buck converter using a feedback resonant circuit
Author :
De Freitas, Luiz Carlos ; Coelho Comes, P.R.
Author_Institution :
Universidade Federal de Uberlandia, Brazil
fDate :
1/1/1995 12:00:00 AM
Abstract :
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
Keywords :
DC-DC power convertors; PWM power convertors; circuit feedback; circuit testing; commutation; equivalent circuits; field effect transistor switches; network analysis; power MOSFET; power field effect transistors; power semiconductor switches; resonant power convertors; state-space methods; switching circuits; PWM; ZCS; ZVS; buck DC-to-DC power converter; constant switching frequency operation; equations; experiments; feedback resonant circuit; lossless commutation; simulation; state-space phase; switching characteristics; 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;
Journal_Title :
Power Electronics, IEEE Transactions on
