Nano Science and Technology Institute
Nanotech 2002 Vol. 1
Nanotech 2002 Vol. 1
Technical Proceedings of the 2002 International Conference on Modeling and Simulation of Microsystems
Chapter 12: Circuit Simulation

Compact Thermal Model for Transient Temperature Fields in Electronic Systems

Authors:Y.C. Gerstenmaier and G. Wachutka
Affilation:Munich University of Technology, DE
Pages:608 - 611
Keywords:thermal modeling, compact thermal model, multi-chip-module, thermal interaction
Abstract:A thermal model is presented, which describes the evolution of the temperature distribution in electronic systems. Introducing a set of deliberately chosen effective time constants, the time dependence is given by convolution integrals with the dissipated power, which are independent of position. Multiplying with a low order matrix which depends on position but not on time, the temperature field is obtained. The matrix constitutes the model and is fitted with a linear and fast algorithm to measurement or simulation. The number of space positions for which the matrix is defined may be reduced arbitrarily to locations of interest to obtain a compact model. As a consequence of the separation of the variables of position and time, a very fast and accurate calculation of the temperature evolution in MCM (multi-chip-modules) is achieved which is beyond the possibilities of FEM-analysis in the case of power pulses over long time intervals. The thermal interaction of different chips in a MCM is investigated.
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