Transient Performance of Buck Converter

Abstract

This article presents a new model of switch mode dc-dc buck converter. The dc-dc converter (buck) will step down the input dc voltage of 24 V to 12 V. The switching frequency of the dc-dc converter (buck) is set to 100 kHz for faster switching operation. The switching frequency of the converter must be as much as higher than the system cross-over frequency for fast transient operation.

In this article, our aim is to study the effect of variation of input voltage, switching frequency and load, so steps can be taken to nullify the effect on performance of converter. For the same we have derived a Simulink model of buck converter in MATLAB environment.