Dear e2e support,
My customer is facing some noise issue with his design incuding our LM5107.
It's driven through a 25Khz PWM.
Has you can see below, we don't see any over/undershoot which could cause some EMI.
Most of the noise is seen through the different cables which are populating the board, around 40MHz and 70MHz.
Could you give us some advices to locate the noise source?
Here is a short view of the schematic. I can send the full schematic and layout in private.
PWM inputs: PWM_1H (yellow) PWM_1L (blue)
PWM_1H (yellow) H-bridge middle point (purple)
Iout (pump/motor current)
Vout (yellow) (pump/motor volt), Iout (green)
Regards,