Analysis of a Hysteresis Current Control DC–DC Buck Converter Suitable for Wide Range of Operating Conditions

Abstract

It is very crucial to maintain high efficiency in a dc–dc converter over an extensive load current range in order to extend the battery-life in advanced fast switching applications. In order to improve the performance of DC-DC buck converters hysteresis current control technique is adopted here in this paper. This paper presents the mathematical modeling and performance analysis of a buck converter with hysteresis current control scheme. This paper examines the performance of the current control hysteresis buck converter under both low and high duty ratios along with load and supply transients. Performance of hysteresis current control buck converter is compared with other fixed frequency control and variable frequency control methods, which shows better dynamic performance; lower voltage ripples are obtained in simulated results using MATLAB 18 version software.