SystemC-AMS modeling and simulation of digitally controlled DC-DC converters

In this paper, an innovative method to model and simulate DC-DC converters with a digital or mixed-signal control loop is proposed using the SystemC-AMS hardware-description language. The proposed method was employed to model a specific test case, consisting of a Buck converter with a digital PID regulator. The reliability of the model was checked by comparing the results with MATLAB/Simulink simulations. The SystemC-AMS approach was found to be well suited to model the proposed system and very efficient from a computational point of view, since the simulation time can be strongly reduced with respect to other solutions (e.g. MATLAB/Simulink).