Figure 7
Application diagram with open load detection circuitry
Open load in OFF software flow principle:
•
IN = low; DEN = high;
•
activate pull-up(OLOFF = high);
•
read IS(A2 - P2.9/A3 - P2.10) ;
•
If IS = IIS(OLOFF)
•
deactivate pull-up(OLOFF = low);
•
read IS (A2 - P2.9/A3 - P2.10);
•
If IS = I
IS(OLOFF)
•
short-to-battery detected;
•
else open load detected;
•
else
•
if IS = I
IS(fault)
•
short-to-ground or overtemperature detected;
•
else
•
normal load condition detected;
•
deactivate pull-up (OLOFF = low);
•
end;
PROFET
™
+2 12V Arduino Shield
2 Board description
User Manual
12
Rev. 1.00
2019-10-23
