Articles | Volume 16
https://doi.org/10.5194/ars-16-117-2018
https://doi.org/10.5194/ars-16-117-2018
04 Sep 2018
 | 04 Sep 2018

Influence of an Electrically Non-Conducting Heat Sink for Power Semiconductors on Radiated Interferences

Stephan Chromy, Kai Rathjen, Sebastian Fahlbusch, Klaus F. Hoffmann, and Stefan Dickmann

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Cited articles

Arien, Y., Dixon, P., Khorrami, M., Degraeve, A., and Pissoort, D.: Study on the Reduction of Heatsink Radiation by Combining Grounding Pins and Absorbing Materials, Proceedings of 2015 IEEE International Symposium on Electromagnetic Compatibility (EMC 2015): [joint conference with EMC Europe]; Dresden, Germany, 16–22 August 2015. a
Bhobe, A. U. and Sochoux, P.: A Study of Grounded-Heatspreader for EMI Mitigation of ASIC IC Package, Proceedings of 2008 IEEE International Symposium on Electromagnetic Compatibility: [2008 IEEE EMC]; Detroit, MI, 18–22 August 2008. a
Brench, C. E.: Heatsink Radiation as a Function of Geometry, Proceedings of Compatibility in the loop: Chicago 1994; IEEE International Symposium on EMC, OCLC: 180504054, 22–26 August 1994. a
Dolente, A., Reggiani, U., and Sandrolini, L.: Comparison of Radiated Emissions from Different Heatsink Configurations, Proceedings of VI International Symposium on Electromagnetic Compatibility and Electromagnetic Ecology, 21–24 June 2005, Saint-Petersburg, 2005. a, b
Fahlbusch, S., Mueter, U., and Hoffmann, K.: Analysis of SiC-MOSFETs utilised in Hard Switching Inverter Topologies with Switching Frequencies up to 1 MHz, PCIM Europe 2015, Nuremberg, 19–21 May 2015. a
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Short summary
For energy efficient power conversion, fast switching power semiconductors are used within power electronics. The switching can lead to disturbances of other electrical devices because of interference on the power line and in the air. The common aluminium heat sinks for the cooling of the power semiconductors are electrically conductive and lead to more interference. Using an electrically isolating ceramic heat sink is an approach to reduce the interference from the heat sink.