A4983 Stepper Driver Burned Up

I seem to have burned out an A4983 stepper driver. I had it running a 7 ohm bipolar stepper motor at 18V, 10 steps/second. I’m pretty sure I wasn’t exceeding the specs; does anyone have an idea what might have happened?

Hello.

It’s hard to deduce much from what you’ve said so far. Did smoke come out? Did you see some evidence of thermal shutdown kicking in while it was still working? What did you have the current set to?

- Jan