Voltage-mode controlled switching converter with dual-edge constant off-time modulation

Author

Xing Chen ; Yiming Chen ; Guohua Zhou ; Ping Yang

Author_Institution

Sch. of Electr. Eng., Southwest Jiaotong Univ., Chengdu, China

fYear

2014

fDate

5-8 Nov. 2014

Firstpage

226

Lastpage

231

Abstract

In order to improve the output-regulation accuracy of the switching converter with conventional constant off-time (CCFT) modulation, dual-edge constant off-time (DCFT) modulation for switching converter is proposed in this paper. The principle of switching converter with DCFT modulation, including leading-triangle constant off-time (LT-CFT) modulation and trailing-triangle constant off-time (TT-CFT) modulation, is introduced, and its steady-state and transient-state performance are analyzed and compared with CCFT modulation. The results show that DCFT modulation improves output-regulation accuracy and transient performance of switching converter. Finally, simulation results validate the correctness of the theoretical analysis.

Keywords

modulation; switching convertors; CCFT modulation; DCFT modulation; LT-CFT modulation; TT-CFT modulation; conventional constant off-time; dual-edge constant off-time; dual-edge constant off-time modulation; leading-triangle constant off-time; output-regulation accuracy; steady-state performance; trailing-triangle constant off-time; transient-state performance; voltage-mode controlled switching converter; Accuracy; Modulation; Switches; Switching converters; Transient analysis; Voltage control; Buck converter; constant off-time; dual-edge constant off-time; leading-triangle modulation; trailing-triangle modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics and Application Conference and Exposition (PEAC), 2014 International

Conference_Location

Shanghai

Type

conf

DOI

10.1109/PEAC.2014.7037859

Filename

7037859