Constant ripple current DC-DC converter using variable on-time and variable frequency control

Author

Chern, Gwo-Tarng ; Shieh, Jenn-Jong ; Chao, Chung-Hsing

Author_Institution

Dept. of Electr. Eng., Ta Hwa Inst. of Technol., Hsinchu, Taiwan

fYear

2011

fDate

20-23 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

This paper proposes a DC-DC converter using variable on-time and variable switching frequency (VONVF) control enhanced constant ripple current control and reduced magnetic components. The proposed converter is realized by making the turn-off time proportional to the on-time of the converter, according to the input and output voltage, thereby reducing the corresponding current ripple on output voltage in the continuous conduction mode (CCM). A Buck DC-DC converter using the proposed control strategy is analyzed in detail, along with some experimental results to show the performance and effectiveness of this converter.

Keywords

DC-DC power convertors; electric current control; frequency control; time-varying systems; DC-DC converter; constant ripple current control enhancement; continuous conduction mode; magnetic component reduction; variable on-time control; variable switching frequency control; Calculators; Inductors; Logic gates; Magnetic switching; Switches; Voltage control; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4577-1044-5

Type

conf

DOI

10.1109/ICEMS.2011.6073566

Filename

6073566