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Design and Analysis of Digital PWM Controller for DC-DC Power Converter

by D. Vinodini, V. Vasanprabhu, V. Rajini
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 65 - Number 12
Year of Publication: 2013
Authors: D. Vinodini, V. Vasanprabhu, V. Rajini
10.5120/10979-6124

D. Vinodini, V. Vasanprabhu, V. Rajini . Design and Analysis of Digital PWM Controller for DC-DC Power Converter. International Journal of Computer Applications. 65, 12 ( March 2013), 38-43. DOI=10.5120/10979-6124

@article{ 10.5120/10979-6124,
author = { D. Vinodini, V. Vasanprabhu, V. Rajini },
title = { Design and Analysis of Digital PWM Controller for DC-DC Power Converter },
journal = { International Journal of Computer Applications },
issue_date = { March 2013 },
volume = { 65 },
number = { 12 },
month = { March },
year = { 2013 },
issn = { 0975-8887 },
pages = { 38-43 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume65/number12/10979-6124/ },
doi = { 10.5120/10979-6124 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T21:20:59.822280+05:30
%A D. Vinodini
%A V. Vasanprabhu
%A V. Rajini
%T Design and Analysis of Digital PWM Controller for DC-DC Power Converter
%J International Journal of Computer Applications
%@ 0975-8887
%V 65
%N 12
%P 38-43
%D 2013
%I Foundation of Computer Science (FCS), NY, USA
Abstract

The aim of the project is to propose a simple digital current mode control technique for dc-dc converters. In the proposed current mode control method, the inductor current is sampled only once in a switching period. A Compensating ramp is used in the modulator to determine the switching instant analytically from the steady state condition . The trajectory of inductor current during the switching period is not estimated in this method. It effectively increases the maximum switching period of the converter when a particular controller is used to implement the control algorithm. It is showed that proposed digital method is versatile enough to implement the control algorithm any one average, peak and valley current mode by adjustment of the sampling instant of the inductor with respect to turn –on instant of the switch. The proposed digital current mode control algorithm is tested on a 12-V input and 1. 5-V,7A output buck converter is switched at 100 KHZ and experimental results are presented.

References
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Index Terms

Computer Science
Information Sciences

Keywords

current mode control dc-dc converters digital control digital current mode control steady state stability voltage-mode control voltage regulator(VR) voltage regulator module(VRM).

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