Modeling and Simulation of a Two Cell Automotive Interleaved Buck Converter

This paper focuses on modeling, analysis and simulation of a 42V/14V dc/dc converter based architecture. This architecture is considered to be technically a viable solution for automotive dual-voltage power system for passenger car in the near further. An interleaved dc/dc converter system is chosen for the automotive converter topology due to its advantages regarding filter reduction, dynamic response, and power management. Presented herein, is a model based on one kilowatt interleaved two-phase buck converter designed to operate in a Continuous Conduction Mode (CCM). The control strategy of the converter is based on a voltage-mode-controlled Pulse Width Modulation (PWM) with a Proportional-IntegralDerivative (PID). The effectiveness of the interleaved step-down converter is verified through simulation results using controloriented simulator, MatLab/Simulink.