Control characteristics of novel digital peak current mode DC-DC converter

Author

Kurokawa, Fujio ; Kajiwara, Kagemasa ; Shibata, Yoshitaka ; Yamabe, Y. ; Tanaka, T. ; Hirose, Keikichi

Author_Institution

Nagasaki Univ., Nagasaki, Japan

fYear

2013

fDate

22-25 April 2013

Firstpage

125

Lastpage

129

Abstract

The purpose of this paper is to present a novel digital peak current mode dc-dc converter and its control characteristics. The proposed method can detect the peak current in real time. The proposed peak current detection circuit is composed of RC integrator and comparator as the A-D converter. The design of RC integrator has a large effect on regulation characteristics and the transient response of the proposed method. In this paper, the influence of circuit parameters of the RC integrator is clarified. As a result, it is confirmed that the proposed method shows a superior transient response by selecting optimal parameters. The convergence time and undershoot are suppressed by 67% and 34% compared with the conventional digital voltage mode control method, respectively.

Keywords

DC-DC power convertors; analogue-digital conversion; electric current control; voltage control; A-D converter; RC comparator; RC integrator; circuit parameters; digital voltage mode control method; novel digital peak current mode DC-DC converter control characteristics; superior transient response; Convergence; DC-DC power converters; Delays; Digital control; Switches; Transient response; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems (PEDS), 2013 IEEE 10th International Conference on

Conference_Location

Kitakyushu

ISSN

2164-5256

Print_ISBN

978-1-4673-1790-0

Electronic_ISBN

2164-5256

Type

conf

DOI

10.1109/PEDS.2013.6527001

Filename

6527001