This paper comprehensively describes analog controller design for DC-DC buck converter using the analogous classic controlling techniques. Different kinds of PID (proportional-integral-derivative) controllers, along with lead-lag, are examined and their simulations are analyzed using Simulink/MATLAB. | Journal of Automation and Control Engineering Vol. 3, No. 6, December 2015 Comparative Analysis of Analog Controllers for DC-DC Buck Converter Ghulam Abbas 1, Hassam Muazzam 2, Umar Farooq 2, Jason Gu 3, and Muhammad Usman Asad 1 1 Department of Electrical Engineering, the University of Lahore, Lahore, Pakistan Department of Electrical Engineering, University of the Punjab Lahore-54590 Pakistan 3 Department of Electrical and Computer Engineering, Dalhousie University Halifax, ., Canada Email: , hassammuazzam@, , , 2 being used in more than 95% of the closed-loop industrial processing [5], [6]. All the controllers in the form of PID are assessed and compared performance-wise. The paper is formulated in the following way: Section II of this paper models the buck converter system. Section III formulates the design for a lead-lag buck converter and compares its performance with other forms of PID controlling designs. Simulated results are simulated in section IV through MATLAB/Simulink environment and section V draws the conclusion. Abstract—This paper comprehensively describes analog controller design for DC-DC buck converter using the analogous classic controlling techniques. Different kinds of PID (proportional-integral-derivative) controllers, along with lead-lag, are examined and their simulations are analyzed using Simulink/MATLAB. The analysis is manifested in time as well as frequency domain and the converter dynamics are evaluated in state-space form as well as in transfer function form. Also, the effect of each controller design technique on system performance is simulated and discussed. The performance of all the types of PID controller is validated using the MATLAB/Simulink environment. II. Fig. 1 shows the switching of DC-DC buck converter and the feedback control circuit model. The power stage of the buck converter includes the parasitic .
