Small Signal Modelling: The Buck Converter

I wanted to start looking at control, so first we have to understand how to develop small signal models of converters. Here we look at how to use IVSB CCB (similar for input current) to generate equations which we can "perturb and linearize" to generate the necessary transfers functions to eventually create a stable control loop. 0:00 - Introduction 4:00 - Modifying IVSB and CCB 8:10 - The Buck Equations 10:40 - Perturbation and Linearization 18:00 - Solving the Equations 21:00 - Generating SS circuit 24:35 - Output Impedance References: Fundamentals of Power Electronics - Erickson and Maksimovic