Starting from a 3D electrothermal field problem discretized by the FiniteIntegration Technique, the equivalence to a circuit description is shown byexploiting the analogy to the Modified Nodal Analysis approach. Using thisanalogy, an algorithm for the automatic generation of a monolithic SPICEnetlist is presented. Joule losses from the electrical circuit are included asheat sources in the thermal circuit. The thermal simulation yields nodaltemperatures that influence the electrical conductivity. Apart from the usedfield discretization, this approach applies no further simplifications. Anexample 3D chip package is used to validate the algorithm.
展开▼
