A novel fast digital control dc-dc converter

Author

Kurokawa, Fujio ; Tamenaga, H. ; Komichi, Y. ; Yamabe, Y. ; Shibata, Yoshitaka

Author_Institution

Nagasaki Univ., Nagasaki, Japan

fYear

2012

fDate

9-12 Oct. 2012

Firstpage

504

Lastpage

507

Abstract

This paper presents a performance characteristic of a novel fast digital control dc-dc converter. It is able to detect the peak point of the reactor current at real time. The proposed circuit configuration is very easy. It is composed of a very low cost Voltage Controlled Oscillator (VCO), the programmable delay circuit and a few flip-flops. It is confirmed the main switch is turned off when the peak reactor current is detected. Furthermore it is shown that the proposed method has the superior transient response to control dc-dc converters. As a result, the undershoot of output voltage is suppressed to 28% compared with the conventional method´s one. The convergence time is also improved to 76% compared with the conventional method´s one.

Keywords

DC-DC power convertors; delay circuits; digital control; flip-flops; programmable circuits; transient response; voltage-controlled oscillators; VCO; fast digital control dc-dc converter; flip-flops; output voltage undershoot; programmable delay circuit; reactor current; transient response; very low cost voltage controlled oscillator; Frequency control; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicle Power and Propulsion Conference (VPPC), 2012 IEEE

Conference_Location

Seoul

Print_ISBN

978-1-4673-0953-0

Type

conf

DOI

10.1109/VPPC.2012.6422751

Filename

6422751