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ESC PCB layout - B-G431B-ESC1

LarkinM96
Visitor

On the phase outputs why are there ground cutouts on the layout for this reference design. Is there a risk to cross couple to the ground plane with the switching noise or is it for thermal concerns?

I've seen this in several ST ESC designs for drones and wanted to know. 

 

Thanks, 

LarkinM96_0-1750197298031.png

LarkinM96_1-1750197340366.png

 

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