DC25_SLIDES_Drive_TutorialEMCEMISituations_Foelkel_V2.pdf

1、Information Classification:GeneralWelcome to ConferenceJanuary 2830,2025Santa Clara Convention Center1ExpoJanuary 2930,2025 Information Classification:GeneralEMC/EMI situations in automotive applicationLorandt Foelkel,Wurth Elektronik eiSos GmbH2Information Classification:GeneralImageSPEAKERLorandt

2、FlkelM.Eng,Wurth Elektronik eiSos GmbHLorandt.Foelkelwe-online.de|we-|askLorandtShort description:Lorandt Foelkel is field application engineer for EMI/EMC situation and switched mode power supply(SMPS)design for industrial-and automotive electronics applications.He is the company spokesperson for E

3、MC&RF Electronic Design seminars and holds over the World more than 900 seminars to design engineers,giving training to easy understanding the EMC problems at board level.Information Classification:GeneralLets start with questions4Do you think that a DC/DC converter can“generate Conducted Emission”?

4、the EMC of a DC/DC converter is“affected only from the PCB layout”?with an“oscilloscope you could solve all EMI situations”?Information Classification:GeneralTodays AGENDA5Design challenge:100W buck-boost DC/DC 95%efficiency minimumEMC complaint for conducted and radiated emissionsMust fit in the al

5、ready defined box(case done from marketing)Decision for the costs fulfilling the requirements:Design 1:lowest cost possible Design 2:compromises price&performance Design 3:no budget limit EMC Lab results compared to own measurements Conclusions and recommendationsInformation Classification:GeneralSe

6、lected DC/DC IC for next examples 60V Buck-Boost Controller mit 4 external MOSFETs possible switching freq.200-700kHz Information Classification:GeneralSolution for lowest cost Design(A)Single side PCB4 Layer PCBHighest possible switching freq 600kHz smalest inductor can be used Lowest cost in compa