Design of high efficiency Flyback converter with energy regenerative snubber

Author

Liao, Chih-Sheng ; Smedley, Keyue M.

Author_Institution

Dept. of EECS, Univ. of California, Irvine, CA

fYear

2008

fDate

24-28 Feb. 2008

Firstpage

796

Lastpage

800

Abstract

The flyback converter is frequently used for multiple outputs and low power application due to its simplicity and both step-up and step-down characteristics. However, the high leakage inductance of the flyback transformer can causes high voltage spike and could damage the main transistor when the switch is turned off. Therefore, a turn-off snubber is needed to limit the peak voltage stress. In this paper, some common snubbers are discussed in comparison with the energy regenerative snubber. The operation of the energy regenerative snubber is analyzed and the design procedures are optimized for energy efficiency followed by experimental verification.

Keywords

power convertors; snubbers; transformers; energy regenerative snubber; flyback transformer; high efficiency flyback converter; high voltage spike; low power application; peak voltage stress; turn-off snubber; Capacitors; Design optimization; Diodes; Energy efficiency; Flyback transformers; Inductance; Power electronics; Snubbers; Switches; Virtual colonoscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE

Conference_Location

Austin, TX

ISSN

1048-2334

Print_ISBN

978-1-4244-1873-2

Electronic_ISBN

1048-2334

Type

conf

DOI

10.1109/APEC.2008.4522812

Filename

4522812