Are the package effects taken into account into the modeling procedure?
• Considered as cavity enclosing the wires: If we are discussing the package effect as a “cavity” enclosing the bondwires, then the package effect is taken into account by the tool. This is done inherently in the extraction procedure by the VeloceRaptor modeling engine that drives the tool, and there is no need to define boundaries and sidewalls like traditional 3D EM solvers. • Considered as leadframe effect: If we are considering the effect of the leadframe, it must be pointed out that the tool targets mainly the accurate and efficient modeling of bondwires. However the user has the capability, within VeloceWired®, to add the parasitic capacitance of the leadframe to the model generated by VeloceWired®. In this way we take into account the most common effect of the leadframe that applies to most package types. In cases where a more detailed model of the leadframe is required, the high frequency models supplied by the package vendor can be added externally to the VeloceWired® model.
