Primary-side controlled flyback converter with current compensation in micro-power applications

Author

Xiao, Jianguo ; Wu, Jiande ; Li, Wuhua ; He, Xiangning

Author_Institution

Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China

fYear

2009

fDate

17-20 May 2009

Firstpage

1361

Lastpage

1366

Abstract

In this paper, a novel primary-side control mechanism with current compensation in flyback converters is proposed. The switch voltage and the switch current are sampled to obtain the information of the output voltage and the load current. The close loop feedback control is based on the information of the switch voltage and the switch current. The control circuit can be integrated into an IC chip, which is very attractive in the micro-power applications. The experimental verification is given in the paper to demonstrate the effectiveness of the proposed primary-side control mechanism with current compensation in micro-power applications. The load regulation performance is improved and the size of the flyback converters is reduced with the proposed solution.

Keywords

compensation; feedback; load regulation; power convertors; IC chip; close loop feedback control; control circuit; current compensation; load current; load regulation performance; micropower applications; output voltage; primary-side control mechanism; primary-side controlled flyback converter; switch current; switch voltage; Adaptive control; Circuit topology; Diodes; Educational institutions; Feedback; Frequency; Helium; Switches; Temperature; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference, 2009. IPEMC '09. IEEE 6th International

Conference_Location

Wuhan

Print_ISBN

978-1-4244-3556-2

Electronic_ISBN

978-1-4244-3557-9

Type

conf

DOI

10.1109/IPEMC.2009.5157596

Filename

5157596