Analysis of switching converters with type 3 compensator using ripple-based control

Abstract

This paper presents small signal analysis of dc-dc converters with ripple-based control. A simple and adaptable method for the analysis of ripple-based converter is introduced. A buck converter with ripple-based control is analyzed as an example. A prototype converter is implemented and the presented experimental results confirm the validity of theoretical analysis. From the results, it is clarified that the controller has the characteristics of a type 3 compensator. Also, it is shown that the converter has good dynamic performance for the step load change.