Effects of Parameter Variation on the Accuracy of a Nonlinear Inductor Model for Switch-Mode Power Supplies Applications

A nonlinear inductor model has been recently proposed, which takes into account the magnetic saturation and the dependence of the inductance on the temperature. The model depends on seven parameters, which are identified based on experimental measurements of the inductor current in a switch-mode power supply. In this paper we show how the accuracy of each parameter affects the overall modeling accuracy in reproducing the inductor current.