eBay TB6560 Stepper Motor Driver Boards

[williamturner1]

do not not even once go over 24V with nema23 steppers or
you can put out the frying tonight sign just like my bit of electronics did.

Hi. Great thread! v interesting to read. Thank you guys for sharing.


My Question: Is it possible to establish the cause of the exploding chip? and how to prevent any future damage?

........1. Back EMF caused it?
..................could it be the board has insufficient protection
..................maybe additional protection should be added - as described by irving2008 in this thread

........2. Something fries when a PSU of >24v is used?

or some other reason?

Surely too higher voltage from the PSU would have damaged the chip there and then?
Does the delay in chip exploding (ie when next turned on) hint at back emf damaging it during motor rundown or at the end of last run and that damage only apparent when you next turned the device on and it exploded?

PS. Anyone in the M25 with a CNC set up that I can come around and admire / ask a few questions about their implementation of driver board vs software and motors? Im a newbie starting out. I'll happily pay you for your time in beer!