Efficiency study for a 150W LLC resonant converter

Author

Cheng, Chun-An ; Chen, Hung-Wen ; Chang, En-Chih ; Yen, Chun-Hsien ; Lin, Kun-Jheng

Author_Institution

Dept. of Electr. Eng., I-Shou Univ., Kaohsiung, Taiwan

fYear

2009

fDate

2-5 Nov. 2009

Firstpage

1261

Lastpage

1265

Abstract

The paper presents and analyzes the efficiency of a 150 W LLC resonant converter in order to compare with the results obtained with a conventional 150 W flyback version. The experimental results of the LLC resonant converter show a maximum efficiency of 94%, and an efficiency of 92% under a full-load condition. Using the presented theoretical equations and design methods, the power losses of the LLC resonant converter are measured and compared with those of a flyback type. Moreover, the switching losses of power switches, the losses of output-power diodes, and the losses of the transformer are considered in the design of the LLC resonant converter.

Keywords

resonant power convertors; switching convertors; LLC resonant converter; efficiency 92 percent; efficiency study; flyback converter; full-load condition; output-power diodes; power 150 W; power switches; switching losses; theoretical equations; transformer loss; Diodes; Equations; Equivalent circuits; Inductors; Magnetic resonance; Resonant frequency; Switches; Switching converters; Switching frequency; Voltage; LLC resonant converter; switching losses;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems, 2009. PEDS 2009. International Conference on

Conference_Location

Taipei

Print_ISBN

978-1-4244-4166-2

Electronic_ISBN

978-1-4244-4167-9

Type

conf

DOI

10.1109/PEDS.2009.5385876

Filename

5385876