This paper describes the evaluation of a new and effective design technology to manage the thermal problems associated with future automotive controller design. A Finite Element Analysis (FEA) model was created to simulate the thermal values associated with electronic components at various power levels inputs. The powertrain controller evaluated for this program uses a single layered insulated metal substrate for surface mount attachment of the 'power' components required for the module. This design approach eliminates costly and cumbersome heat sinks and clips. The model is detailed enough to provide maximum die temperatures as well as thermal gradients across the entire substrate. A major benefit of the model is that boundary conditions such as airflow and power levels can easily be modified to provide the design with a sensitive analysis. The model was validated at the component and mould level to assure accurate simulation results. The component validation was performed using physical laboratory measurements. The system was validated using a thermal imaging camera to visually measure temperature levels. The results from this study have confirmed that a design utilizing an insulated metal substrate can meet the thermal requirements imposed by a smaller, hotter engine compartment.
Finite element analysis of the thermal characteristics of an automotive powertrain controller
Die Simulation der Wärmeverteilung bei Mikrocontrollern in der KFZ-Elektronik mit der Methode der finiten Elemente
1993
6 Seiten, 5 Bilder, 3 Tabellen, 3 Quellen
Conference paper
English
Computer Aided Engineering for Automotive Powertrain Controller Development
British Library Conference Proceedings | 1995
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