A lowcost online estimator for switchmode power supplies with saturating ferritecore inductors Ferritecore inductors are largely used in switchmode power supplies (SMPSs) and can be fruitfully exploited also when working in partial saturation. Several behavioral models have been recently proposed to represent both inductance and power losses in saturation conditions. In this paper we exploit this kind of models for estimating online relevant features of the SMPS inductor, such as current ripple and power loss, which are difficult to monitor through acquisition of easilymeasurable quantities only. The method works at electrical steadystate, but is able to follow the thermal transients. Models are implemented on a lowcost microcontroller and tests are performed on a boost converter, for different operating conditions.

Pulse Compression Modeling for Voltage Driven Ferrite Inductors in Moderate Saturation The volume and weight of the Switch Mode Power Supplies can be significantly reduced by using ferrite magnetic core inductors in a slightly saturated region. Accurate models of their behavior are needed to design efficient devices. The possibility of modelling the nonlinear system when the device is voltage driven is mainly of practical importance, since in the case of implementation of the procedure in hardware the sources that are easiest to find are assimilable to voltage generators. This paper proposes and verifies the quality of the models based on Hammersteintype structures to represent the nonlinear behavior in the case of voltagedriven inductors.