Quote:
Originally Posted by MPaulHolmes
The TVS diode temperature was climbing at about 1 deg C every 5 seconds.
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Sorry, can't watch the videos at work, but I was just curious about a couple of things - first, do you have a picture of the driver/power section? And second, does the TVS diode temp behavior change in anyway with the scope disconnected? If it's unchanged, that would at least eliminate the scope as a source of problems. Maybe you've already done that...
Also, I suspect the spiking may get worse with higher bus voltage - was there a difference between 12v and 24v?