A hybrid control method to maximize efficiency for active mode efficiency regulation

Author

Park, Young-Bae ; Choi, Hang-Seok

Author_Institution

Fairchild Korea Semicond., Bucheon

fYear

2007

fDate

Sept. 30 2007-Oct. 4 2007

Firstpage

83

Lastpage

88

Abstract

The impact on the environment, in regards to power supply energy efficiency, has attracted growing attention in the international community. This paper proposes a hybrid control method that combines the conventional hard-switched PWM operation and variable frequency quasi-resonant operation. The proposed approach reduces the switching loss at medium and light load effectively without increasing the conduction loss. The proposed scheme was implemented and tested with a 90~265 Vac/5 V, 30 W off-line flyback converter.

Keywords

PWM power convertors; switching convertors; PWM operation; active mode efficiency regulation; conduction loss; energy supply efficiency; hard-switching; hybrid control method; off-line flyback converter; power 30 W; switching loss; variable frequency quasiresonant operation; Diodes; Energy efficiency; Inductors; MOSFET circuits; Power generation; Power supplies; Pulse width modulation; Pulse width modulation converters; Switching loss; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 2007. INTELEC 2007. 29th International

Conference_Location

Rome

Print_ISBN

978-1-4244-1627-1

Electronic_ISBN

978-1-4244-1628-8

Type

conf

DOI

10.1109/INTLEC.2007.4448743

Filename

4448743