Compact Double-Sided Cooling for High-Current-Density 800V SiC Power Module from BorgWarner

Authors

M. Strassburg, V. Iyappan, BorgWarner, Nuremberg; T. Alfermann, BorgWarner, Kokomo, USA; A. Mayer, J. Deussen, H. Nanjundaswamy, BorgWarner, Auburn Hills, USA; L. Louco, Asheville, USA

Year

2025

Print Info

Production/Publication ÖVK

Summary

Battery electric vehicles (BEV) continue to gain a significantly increasing share in the sales of new passenger cars. The power module is the main part of the inverter to convert the direct current from the battery into alternating current for the electric motor. Therefore improvements of the power module will directly transform into higher efficiency of the car. With increasing demand on smaller inverter and power modules, the dimensions of a power module play a key role. This requests an increase in current density. Such an increase demands improvements in the semiconductor chip but especially for the cooling of the power module. The usage of SiC in power modules is already state of the art. Cooling efficiency depends on the ability to remove the heat from the point of generation directly with shortest distances and materials of lowest thermal resistivity. BorgWarner’s double sided cooling power modules enable highest current densities. The heat generated inside the SiCMOS is extracted from both sides simultaneously. This allows for either lower Tj of the SiCMOS or current supply with less die area. Due to slim Viper power switch technology and advanced materials for transporting the heat to the cooling rails, BorgWarner’s DSC power module enables highest efficiency for the conversion of direct current to alternating current with a very small footprint. This compact dimension allows for implementation inverter with a small form factor. BorgWarner will provide an insight how high current power modules on one side and smaller power modules for segment A-C cars or hybrids on the other side can be realized for a sustainable mobility.

ISBN

978-3-9504969-4-9

DOI

https://doi.org/10.62626/weha-rujf Copy link

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