Title :
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
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;
Conference_Titel :
Vehicle Power and Propulsion Conference (VPPC), 2012 IEEE
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0953-0
DOI :
10.1109/VPPC.2012.6422751
