Zero-voltage switching technique in DC/DC converters

Author

Liu, Kwang-Hwa ; Lee, Fred C Y

Author_Institution

Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

5

Issue

3

fYear

1990

fDate

7/1/1990 12:00:00 AM

Firstpage

293

Lastpage

304

Abstract

A novel resonant switch operating under the principle of zero-voltage switching is presented. The basic configurations of the voltage-mode resonant switches are presented. The circuit´s operating principles are described using a voltage-mode quasi-resonant boost converter. DC analysis of the converter is carried out. A new family of voltage-mode quasi-resonant converters are derived, and several members of this family are presented. The duality relationship between the zero-current switching technique and the zero-voltage switching technique is derived. These two techniques are compared using an example showing the duality between a current-mode quasi-resonant Buck converter and a voltage-mode quasi-resonant boost converter. The similarities and differences of the voltage-mode quasi-resonant converters and the Class-E converters are discussed. A 5 MHz 50 V to 5 V flyback converter employing the zero-voltage switching technique has been implemented. Design considerations and experimental results of this circuit are presented

Keywords

power convertors; switching; 5 MHz; 50 to 5 V; Class-E converters; DC/DC converters; current-mode quasi-resonant Buck converter; flyback converter; quasi-resonant boost converter; voltage-mode quasi-resonant boost converter; voltage-mode resonant switches; zero-current switching; zero-voltage switching; Capacitance; DC-DC power converters; Pulse width modulation; Pulse width modulation converters; RLC circuits; Resonance; Switches; Switching converters; Zero current switching; Zero voltage switching;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.56520

Filename

56520