An algorithm for Buck-Boost converter based on the principle of capacitor charge balance

In this paper, a novel non-linear control algorithm is applied to a Buck-Boost converter. Based on the concept of capacitor charge balance, the proposed algorithm predicts an improved transient response for a Buck-Boost converter during the large load-current step change. The equations used to calculate the improved transient time are presented. Some traditional control methods are introduced. The simulation of Buck-Boost converter based on the charge balance control mode and voltage mode control was done. Through the simulation results it can illustrate that the proposed controller had a superior performance when compared to the conventional voltage mode controller.