A buck quadratic PWM soft-switching converter using a single active switch

Author

Barbosa, Lucio Dos Reis ; Vieira, Joao Batista, Jr. ; De Freitas, Luiz Carlos ; Vilela, Márcio da Silva ; Farias, Valdeir José

Author_Institution

Dept. de Engenharia Eletrica, Univ. Fed. Uberlandia, Brazil

Volume

14

Issue

3

fYear

1999

fDate

5/1/1999 12:00:00 AM

Firstpage

445

Lastpage

453

Abstract

High-switching frequency associated with soft commutation techniques is a trend in switching converters. Following this trend, a buck pulsewidth modulation (PWM) converter is presented. The DC voltage conversion ratio of this converter has a quadratic dependence on duty cycle, providing a large stepdown. This new buck quadratic PWM soft-single-switched converter, having only a single active switch, provides a high efficient operating condition for a wide load range at high-switching frequency. In order to illustrate the operating principle of this new converter, a detailed study including theoretical analysis, relevant equations and simulation, and experimental results is carried out

Keywords

PWM power convertors; commutation; switching circuits; DC voltage conversion ratio; buck pulsewidth modulation converter; buck quadratic PWM soft-switching converter; high-switching frequency; quadratic dependence; single active switch; soft commutation techniques; Analytical models; Buck converters; Equations; Frequency conversion; Pulse width modulation; Pulse width modulation converters; Switches; Switching converters; Switching frequency; Voltage;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.761688

Filename

761688