Assessment of the Current for a Non-Linear Power Inductor Including Temperature in DC-DC Converters

A method for estimating the current flowing through a non-linear power inductor operating in DC/DC converter is proposed. The knowledge of such current, that cannot be calculated closed form as linear inductor, crucial design converter. proposed based on third-order polynomial model already developed by authors; it exploited to solve differential equation and implement flux circuit simulator. allows estimation up saturation, intended point at which inductance reduced half its maximum value. profile depends also temperature. Based this, influence core temperature conduction time switch was determined. This study shows exploitation saturation requires proper value theoretical analysis has been experimentally verified boost valid entire class DC-DC converters subjected constant voltage given time. simulations agree with experimental data from case concerning