Experimental Verification of the Impedance-Based Approach for the Feedback Loop Design of the DC-DC Converter

Abstract

The paper presents experimental verification of the previously proposed power converter’s voltage loop design approach based on output impedance control. According to this approach the maximum value of the output impedance can be adjusted by setting the voltage loop bandwidth. The approach is confirmed by measurements of output impedance of two boost converter topologies at different crossover frequencies. During experiments the second (minor) peak was observed. The theoretical explanation of this minor peak is given in this paper.