A Time-Domain Method for the Analysis of Thermal Impedance Response Preserving the Convolution Form

Carmona, Manuel; Marco, Santiago; Palacín Roca, Jordi; Samitier, Josep

doi:https://doi.org/10.1109/6144.774738

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Issue date

1999

Author

Carmona, Manuel

Marco, Santiago

Palacín Roca, Jordi

Samitier, Josep

Suggested citation

Carmona, Manuel; Marco, Santiago; Palacín Roca, Jordi; Samitier, Josep; . (1999) . A Time-Domain Method for the Analysis of Thermal Impedance Response Preserving the Convolution Form. IEEE Transactions on Components and Packaging Technologies, 1999, vol. 22, núm. 2. https://doi.org/10.1109/6144.774738.

Abstract

The study of the thermal behavior of complex packages as multichip modules (MCM’s) is usually carried out by measuring the so-called thermal impedance response, that is: the transient temperature after a power step. From the analysis of this signal, the thermal frequency response can be estimated, and consequently, compact thermal models may be extracted. We present a method to obtain an estimate of the time constant distribution underlying the observed transient. The method is based on an iterative deconvolution that produces an approximation to the time constant spectrum while preserving a convenient convolution form. This method is applied to the obtained thermal response of a microstructure as analyzed by finite element method as well as to the measured thermal response of a transistor array integrated circuit (IC) in a SMD package.

URI

http://hdl.handle.net/10459.1/57441

DOI

https://doi.org/10.1109/6144.774738

Is part of

IEEE Transactions on Components and Packaging Technologies, 1999, vol. 22, núm. 2