martinjaeger
commented
2 years ago Yes, taking the larger footprint makes a lot of sense and will be implemented in the next revision. The cost increase is quite low.
I will also update the sense traces, but probably not exactly like in the paper you linked, which is designed for much lower current. I don't want to waste any trace width in the high current path with the via outside the shunt, so I would place the traces towards the center of the shunt.
https://www.analog.com/media/en/analog-dialogue/volume-46/number-2/articles/optimize-high-current-sensing-accuracy.pdf This article of ADI provides some recommendation for a 4 point footprint for shunt. Would something like this be done in the next version?
Also based on thermal performance, a 5931 package SMD shunt might be better than a 3920 one?