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LT3518 mounting component failure emc test

Category: Hardware
Product Number: LT3518EFE#PBF
Software Version: Altium Designer

Hello,

Thank you in advance for your help, which will be precious to me.

I am currently encountering a problem with my product, which does not pass the EMC tests.

The technician who carried out the EMC tests asks us to concentrate on the zone indicated below where the EMC fault is localised.

Bellow you'll find the schematic picture,

My colleague changed the R14 resistor by a C capacitor 4.7uF on the PWM line and it doesn't change the result of the emc test.

There is two SW pin, wich are connected electrically under casing , do we need to connect them also on the design ?

Bellow you'll find the pcb design for this area 

Its a two layer PCB (TOP Layer) :

Bottom Layer : 

If you have any question, feel free to ask me,

Thank you a lot for your help,