Quantization-based simulation of switched mode power supplies

This article studies the performance of Quantized State System (QSS) algorithms in the simulation of Switched Mode Power Supplies (SMPS). Under realistic modeling assumptions, these models result stiff and exhibit frequent discontinuities making them difficult to simulate by classic solvers. However, there are Linearly Implicit QSS (LIQSS) methods that can efficiently handle these types of systems providing faster and more accurate results. In order to corroborate these features, we first built the models corresponding to the different topologies of SMPS, and we analyzed the resulting equation structures in order to establish if they can be efficiently simulated by LIQSS algorithms. Then, we compared the simulation performance of LIQSS and the classic solver DASSL, showing that LIQSS results are from 3 to 200 times faster and noticeably more accurate than DASSL.