This work defines and carries out a methodology for the sizing of static converter structures. It intégrâtes several pre-existing tools, and is based on the automatic formulation with symbolical calculation techniques of a sizing model. This one takes into account - at the same level - the physical aspect of the operating and the design aspect in terms of the spécification board requirements. The basic knowledge to complète the approach is minimal, it is made of the node équations of the circuit and the spécification board. In the methodology, the user actions are reduced and simplified as much as possible. From those principles, added to the analysis packages, a sizing aided tool is given to the designer, This whole set of tools can be integrated in a global approach for the CAD of static converters.
