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

fYear

1993

fDate

20-24 Jun 1993

Firstpage

330

Lastpage

336

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;

fLanguage

English

Publisher

ieee

Conference_Titel

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

Conference_Location

Seattle, WA

Print_ISBN

0-7803-1243-0

Type

conf

DOI

10.1109/PESC.1993.471905

Filename

471905