GarageTinkerer
New Member
I am using the linked stepper driver to drive some small stepper motors.
https://www.pololu.com/product/2133
The website claims that you can run 1.5A per phase without active cooling, but I find that when I run about 1.1A continuous that the chip gets too hot for my liking. I have some small aluminum finned heat sinks that I can attach, but only to the top of the plastic casing of the chip. I realize that they would be better on the bottom side of this board, but I'm using a board with sockets for plugging it in that won't allow for that.
The question is whether or not thermal paste will actually bond to that plastic casing to attach the aluminum heat sink. Can this be expected to wick away a fair amount of heat? For what it's worth, 3d printing folks often use double sided tape to attach these little heat sinks but that seems like a very poor solution to me.
Thanks
https://www.pololu.com/product/2133
The website claims that you can run 1.5A per phase without active cooling, but I find that when I run about 1.1A continuous that the chip gets too hot for my liking. I have some small aluminum finned heat sinks that I can attach, but only to the top of the plastic casing of the chip. I realize that they would be better on the bottom side of this board, but I'm using a board with sockets for plugging it in that won't allow for that.
The question is whether or not thermal paste will actually bond to that plastic casing to attach the aluminum heat sink. Can this be expected to wick away a fair amount of heat? For what it's worth, 3d printing folks often use double sided tape to attach these little heat sinks but that seems like a very poor solution to me.
Thanks