%X This paper describes a parameterization software used for the generation of behavioral models of power converters. This tool eases the capture and generation of fast and accurate models based on the information provided by manufacturers and measures. The models incorporate many behavioral features and can be used at different levels in the analysis, design and verification of complete power distribution systems like aircraft and automotive power systems. Simulations of common tests of power systems are presented to show the functionality of the models. %I IEEE Computer Society %C Piscataway, New Jersey (USA) %A Roberto Prieto López %A Leonardo Laguna Ruiz %A Jesús Angel Oliver Ramírez %A José Antonio Cobos Márquez %B Power Electronics Congress,2008. CIEP 2008. 11th IEEE International %D 2008 %L upm3347 %T A Parametrization Tool for Power Electronics Design at System Level