Fried diode... why?

[Eudaimonium]

No problems. You guys feel free to fill in if I forgot anything, that post was not very thorough.

 

[rileyscool101]

Okay does this also mean the diode should be isolated from the host? I bought an anodized heatsink so I hope so..

 

[Eudaimonium]

Is the driver's negative input same point as it's negative output?

Yes = You don't need to isolate diode, as long as it's case negative or case neutral.
No = You need to isolate diode.