Using Hybrid Systems Theory to Simulate the Behaviour of Step-down Dc-dc Converters

This paper presents a simulation technique for step-down DC-DC converters based on the hybrid systems theory. The proposed technique is able to simulate the behaviour of the converter in both transient and steady state regimes. To show the applicability of the proposed technique a buck converter is considered. Both output voltage and inductor current are acquired with a digital oscilloscope and are compared with the ones obtained with the proposed technique during steady state regime to show its applicability. Besides, both transient and steady responses of the converter obtained from the proposed simulation technique are compared with ones computed from MATLAB/SIMULINK environment.