The small signal model of Buck circuit with lead compensator network

In this paper, we use the typical of basic ac modeling approach to establish Buck circuit in the continuous conduction mode (CCM), and obtain the open-loop control-to-output transfer function. Through analysis of the transfer function we design the corresponding compensation networks, which makes the main circuit designed have a good steady state and dynamic performance. On the basis of the theoretical calculation we establish the complete diagram of the systems, then use the engineering calculation software mathcad and simulation software saber to verify feasibility of the design.