Evaluation of DC-DC Converters Using MATLAB Simulink

Abstract

This study explores the design, modeling, and simulation of three important DC-DC converter topologies—buck-boost, Ćuk, and SEPIC— employing MATLAB Simulink as a robust simulation environment. Each converter is thoroughly modeled to assess its voltage regulation performance under varying operational conditions. MATLAB Simulink serves as an advanced platform for analyzing dynamic system behaviors and optimizing critical design parameters, including duty cycle, switching frequency, and passive filter components. The comparative analysis focuses on output voltage stability, conversion efficiency, and transient response characteristics. The simulation parameters, while not exhaustive, are carefully selected to exhibit the operational principles and performance trade-offs inherent to each topology. The findings elucidate the different advantages and limitations of the buck-boost, Ćuk, and SEPIC converters, providing valuable insights for selecting the optimal topology tailored to specific power electronic applications, such as renewable energy systems, electric vehicles, and portable electronics. This research contributes to the broader understanding of DC-DC converter design and its practical implications in modern power management systems.