Part Number:DRV8812
We are implementing DRV 8812 on a mobile printer and evaluating it.
When printing about 10 sheets in 15 ℃ environment, the printer suddenly stopped.
After confirming, it was 2 Ω between VMA and GND.
Another one got 15 Ω between VM and BOUT 2
Power supply voltage VM = 15.5 V
Motor current = 290 mA or 400 mA
There is no overvoltage in the VM.
he following terminals are controlled during printing.
nRESET,nSLEEP,AENBL,BENBL
VM supply
Backfeed start → valid
Stop backfeed → disable
Feed start → valid
FEED stop → disabled
If these signals change frequently, is there a possibility of device short circuit?