Abstract—The averaged model of non-ideal Boost converter operating in discontinuous mode (DCM) circuit was studied based on the switching elements model, the equivalent circuit method, and the energy conservation law, in which the duty ratio constraint was introduced to improve the model. The open-loop transfer function was derived to build the small signal model, by adding a voltage-controlled feedback loop, the closed-loop transfer function was also derived. The simulation results showed the correctness of the model at last.

Index Terms—Boost converter, Non-ideal, Closed-loop control

Gang-jun Xie is with School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, Anhui, China (corresponding author, e-mail: gjxie8005@hfut.edu.cn).
Xuan Zhao is with School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, Anhui, China.
Hai-bin Fang is with School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, Anhui, China.
Hui-fang Xu is with School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, Anhui, China.

Cite: Guang-jun Xie, Xuan Zhao, Hai-bin Fang and Hui-fang Xu, "Averaged Modeling of Non-ideal Boost Converter Operating in DCM," International Journal of Computer and Electrical Engineering vol. 3, no. 1, pp. 79-83, 2011.