COMPARATIVE STUDY OF PROPORTIONAL INTEGRAL AND PASSIVITY BASED CONTROL FOR BUCK CONVERTER Topics: Dynamical Systems Models and Methods; Energy and Power Systems; Model-Driven Simulation Engineering; Simulation Tools and Platforms In Proceedings of 1st International Conference on Simulation and Modeling Methodologies, Technologies and Applications SIMULTECH - Volume 1, 309-314, 2011 , Noordwijkerhout, Netherlands