Analysis of digital average current control of buck converter with single-edge modulation

Author

Zhou, Guohua ; Xu, Jianping ; He, Mingzhi ; Wang, Jinping

Author_Institution

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

fYear

2008

fDate

21-24 April 2008

Firstpage

1

Lastpage

6

Abstract

Digital average current (DAC) control of buck converter with single-edge modulation (trailing-edge modulation and leading-edge modulation) is studied in this paper. To calculate the average inductor current with minimum calculation and appropriate precision, a new method called as four-point-mean method is proposed. The control laws for trailing-edge modulation and leading-edge modulation are derived by using four-point-mean method, and their stabilities are also studied in this paper. Simulation results are given to verify the analysis results.

Keywords

DC-DC power convertors; digital control; electric current control; switching convertors; buck converters; digital average current control; four-point-mean method; leading-edge modulation; single-edge modulation; trailing-edge modulation; Analog-digital conversion; Buck converters; Current control; DC-DC power converters; Digital control; Digital modulation; Error correction; Inductors; Pulse width modulation converters; Switching converters;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Technology, 2008. ICIT 2008. IEEE International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-1705-6

Electronic_ISBN

978-1-4244-1706-3

Type

conf

DOI

10.1109/ICIT.2008.4608593

Filename

4608593