Physics – Condensed Matter – Materials Science
Scientific paper
2007-09-12
Dans Proceedings of 12th International Workshop on Thermal investigations of ICs - THERMINIC 2006, Nice : France (2006)
Physics
Condensed Matter
Materials Science
Submitted on behalf of TIMA Editions (http://irevues.inist.fr/tima-editions)
Scientific paper
This paper presents a very straightforward method to compute the transient thermal response to arbitrary power dissipation profiles in electronic devices with multiple heat sources. Using cubic spline interpolation of simulated or measured unit power step response curves (Zth-functions), additional errors due to model reduction can be avoided. No effort has to be spent on the generation of compact models. The simple analytic form of the interpolating splines can be exploited to evaluate the convolution integral of the Zth-functions with arbitrary power profiles at low computational costs. An implementation of the algorithm in a spreadsheet program (EXCEL) is demonstrated. The results are in very good agreement with temperature profiles computed by transient Finite Element simulation but can be obtained in a fraction of the time.
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