I am trying to us a PWM HS Output on an MC4x to drive a signal needed for a PWM fan. I will get an open load when I try to drive it directly, and even with disabling the open load check it still will not work. The output just stays at 12v.
If I add a 1k resistor from the PWM output to ground, everything works as it should. But now the issue I have is with no power to the MC4x, I have some leakage voltage in the range of 50ma which will draw the battery down.
Is this a software or hardware issue that will not allow me to use this PWM output to drive this fan directly??
My work around is using a relay to make and brake the resistor to ground when the MC4x is powered. But this is not a great solution, and would like to see if this is just a software issue that could be fixed.
Customer support service by UserEcho