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Approaches to radiated emissions reduction of powertrain control modules

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4 Author(s)
Belokour, I. ; Visteon Corp., Dearborn, MI, USA ; Edwards, R. ; Jacobs, G. ; Zaremski, M.

Basic concepts and guidelines for design of an electromagnetically compliant automotive electronic system are available today. At the same time system-specific configurations sometimes make the final EMC behavior unpredictable. This contribution addresses some experimental approaches used for radiated emissions reduction from Motorola MPC500 family-based powertrain control modules. The applied approaches include analysis of possible noise sources in the microcontroller unit, reduction of core power supply coupling through high-speed PWB routing, application of low ESL decoupling capacitors, filtered connectors and the spread-spectrum clock generation (SSCG) technique. All approaches were validated by radiated emission measurements in a semi-anechoic chamber according to the CISPR 25 measurement technique. The adopted strategy allowed us to obtain the EMC compliant powertrain control module.

Published in:

Electromagnetic Compatibility, 2004. EMC 2004. 2004 InternationalSymposium on  (Volume:3 )

Date of Conference:

9-13 Aug. 2004