SPICE Model of a Real Coil Inductance feature analysis with current variation

Abstract

As it is known the passive components such as the resistor, the capacitor and the coil are not ideal components and have a nonlinear behavior. In this paper the study will start from the real equivalent circuit of a coil and a nonlinear SPICE model whose inductance varies with current will be created. The correctness of the SPICE model will be studied on the inductance region of the coil. The behavior of the SPICE model without considering the variation with temperature, parasite capacitance and RP will be presented in a future paper. The behavior of the SPICE model is compared with the behavior of the real coil and with the SPICE behavior of the coil proposed by the component manufacturer.