No abstract

No abstract

In this paper a simple technique to improve the efficiency on multiphase converters is Input filter Phase current Total current explored. The number of phases is dynamically Iase changed in order to reduce power losses at light load. +t Theoretical considerations about the application field of this technique and the influence on the output T Load (a) capacitor are provided. Moreover, practical aspects Output \ such as influence of MOSFET driver and DC current voltage sharing among phases should be taken into account. Experimental results show that this technique allows Output filter important improvements in the efficiency while Switches(output capacitor) maintaining satisfactory current sharing in the (MOSFET) connection/disconnection of the phases.Efficiency vs. load current

No abstract

In this paper several techniques for integration of magnetic components in interleaved converters are analyzed. Magnetic components define the way the energy is transformed. Several opposite approaches can be considered: from decoupled integrated inductors to tightly coupled inductors. The integration of inductors in the same core for multiphase converters is especially analyzed from the point of view of size, losses and coupling.

No abstract

No abstract

Today, "black-box" behavioral models of power converters are becoming interesting for system-level analysis. These models can be used to evaluate the response of power electronics systems which are composed of commercial converters, since they can be fully parameterized by analyzing the actual converter response. In this paper a new identification method of "black box" models for DC-DC converters is presented. This method is based on the analysis of the step transient response of the converter, which is obtained by means of simple experiments. The identification of the model is carried out using well established fitting algorithms, which can be applied using commercial tools. I.978-1-4244-4783-1/10/$25.00 ©2010 IEEE