Has anyone used the ACS754xCB-050, http://www.allegromicro.com/en/Products … acs754faq/, successfully with BatchPCB?
I have an Eagle footprint which requires a bunch of via’s to be placed where the larger holes are required; I would assume it will then just be punched out. Is there anything else I need to lookout for?
Adi
I’m not sure what you mean by “punched out”. The ovals hole for pins 4 and 5? I’m not sure how they would be made. If routed, they probably wouldn’t be plated through. I doubt they’d be punched. Probably requires some special handling in PCB fab, The vias are likely for heat. Pretty odd duck, overall.
By the way, they REALLY don’t want you to use that part.
I see what you mean… I got two of these I got for free and was hoping to use them in my next PSU design.
Probably not going to happen.
If you run at considerably less that 50A, you probably could just use round holes for those “pins” (It’s hard to call that hunk of metal a pin…) and skip the funky vias. They kind of remind me of cartoon machine gun bullet holes…
The PSU is to be used in a 4 wheeled robot, with the max current being about 20A if all 4 motors stall at the same time; probably not a very likely event.
What if I place a bunch of via’s in a pattern around the edge just inside of the required set and use it as a perforated edge?
e.g.
http://i252.photobucket.com/albums/hh10 … rfedge.jpg
and then break along the red line?
If you have access to a mill or even a drill with a cross sliding vice, you could mill out the slot. You could even dremel it out with a simple template. Solder it from both sides. keep the vias. I think you will have unsatisfactory results with busting out a hole.
I'd be surprised if they let you do that. To make a proper hole for that part you really need plated through slots, which is not something that BatchPCB does AFAIK.AdiCPT:
The PSU is to be used in a 4 wheeled robot, with the max current being about 20A if all 4 motors stall at the same time; probably not a very likely event.What if I place a bunch of via’s in a pattern around the edge just inside of the required set and use it as a perforated edge?
e.g.
and then break along the red line?
I’d suggest using just a simple shunt resistor solution. Those hall effect current sensors are just too fiddly for my taste.
+1 to that. Those sensors are big and annoying to mount.NleahciM:
I’d be surprised if they let you do that. To make a proper hole for that part you really need plated through slots, which is not something that BatchPCB does AFAIK.I’d suggest using just a simple shunt resistor solution. Those hall effect current sensors are just too fiddly for my taste.
You would be better off with something like this:
I noticed they have another package that looks exactly the same, but those big heatsinks or whatever they are are flat and meant to be soldered to the board rather than through it. Can you bend those metal tabs to lay flat on the board?
