Effect of filter elements on the performance of buck converter

In a large number of industrial applications, it is required to convert a fixed dc voltage to a different dc voltage level, with a regulated output. To perform this task, a dc-dc converter is needed. There are three basic converters namely Buck, Boost and Buck-Boost. This paper presents a comprehensive study on the influences of filter elements on buck converter performance. The MOSFET switch is used as a switch and its behavior is analysed using a switching model and this model is used to study the switch performance on the Buck converter. In the proposed method, the filter elements, inductors and capacitors are varied and its effect on the performance of buck converter is studied. In a Buck converter these elements are varied one at a time and its effect on the performance is seen. The buck converter is designed for an input voltage of 30V and output voltage of 12V. This paper also gives better insight into transient state and steady state performances of the Buck converter when the filter elements are varied. The proposed design is better in terms of less ripple content, good regulation, better efficiency and excellent transient properties.