Comprehensive Evaluation of PI-Controlled DC-DC Buck Converter: Switched, Averaged, and State-Space Modeling Approaches

In this work, switched, averaged and state-space averaging model based simulation analysis of a dc-dc buck converter is presented. These models are compared using computer-aided simulations performed in PSIM and MATLAB. Furthermore, the state-space model of the buck converter is developed with a proportional integral (PI) controller to control the peak overshoot and settling time of the output voltage and inductor current while enabling the converter to track the reference voltage in steady state. The comparison provides a useful reference for emerging researchers in this field.