NDLI: A new high performance digitally controlled dc-dc converter with peak current-injected control

Content Provider	IEEE Xplore Digital Library
Author	Kurokawa, F. Sukita, S. Shibata, Y. Yokoyama, T. Sasaki, M. Mimura, Y.
Copyright Year	2008
Description	Author affiliation: Dept. of Electr. & Electron. Eng., Nagasaki Univ., Nagasaki (Kurokawa, F.)
Abstract	The current mode dc-dc converter is useful in order to perform the superior dynamic characteristics. However, these studies have focused on sensing the average value of the switch/reactor current because it is very difficult to sample the data of accurate peak point of switch/reactor current in the digitally controlled high switching converter. Therefore, it has been reported that the peak point is estimated from the slope of reactor current, but there has been no study that tried to detect the peak value of reactor/switch current in the fast switching dc-dc converter. This paper presents a new digital control circuit which is able to detect not only the average output voltage but also the peak switch current of the high frequency switching dc-dc converter. In this proposed digital control circuit, the peak current-injected control is realized using the combination of the simple dual pulse width modulation analog-to-digital signal converter and the programmed delay circuit. In 100 kHz digitally controlled dc-dc converter, it is seen in simulation that the proposed method has no overshoot of the output voltage and the convergence time that the output voltage is settled to steady-state is only 30 mus. The difference between the transient time of the proposed circuit and that of the conventional method is an order of magnitude.
Starting Page	761
Ending Page	765
File Size	262562
Page Count	5
File Format	PDF
ISBN	9781424416677
ISSN	02759306
DOI	10.1109/PESC.2008.4592021
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-06-15
Publisher Place	Greece
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Converters Switches Inductors Digital control Delay Detectors Transient analysis
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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