Reduce the 12v supply voltage. Does the pulse width increase as you reduce the voltage?
Do this with all parts in the circuit.
The rail may be regulated and it's being controlled by terminal 16.
Do this with all parts in the circuit.
The rail may be regulated and it's being controlled by terminal 16.
woooow !!! I reduced it to 10.5v dc and if it increases the pulse width as if it works normal. How does this work?
The power supply rails are likely regulated.
When the current demand increases or the voltage drops, the pulse width increases to maintain the target rail voltage. You can confirm that there is regulation if the rail voltage is constant no matter what the 12v supply voltage is (within the operating range of the amp).
When the current demand increases or the voltage drops, the pulse width increases to maintain the target rail voltage. You can confirm that there is regulation if the rail voltage is constant no matter what the 12v supply voltage is (within the operating range of the amp).
the rail voltage is maintained, when it reaches 9.5v it begins to decrease because it no longer feeds it well but it remains from 9.6v to 12v that my source delivers.
The reference voltage is set on terminal 15. As soon as 16 reaches that voltage the pulse width will drop.
The regulation isn't capable of compensating for all input voltage. That why I stated that it maintains rail voltage for the operating range of the amp. The manufacturer doesn't likely include anything below about 10.5v.
The regulation isn't capable of compensating for all input voltage. That why I stated that it maintains rail voltage for the operating range of the amp. The manufacturer doesn't likely include anything below about 10.5v.
The fact is that it does the same with the car battery, do I have to see how to regulate it? Modifying the resistance value?
If this is regulation, there is nothing to fix. The failure in the car could have been due to something else.
It is worth mentioning that this problem is presented to me when I put the 12vdc / 54 amp source and in the car, in the regulated source it works fine. that is why I was looking for a solution
I don't see a problem with the information you've provided.
If you think there's a problem, I'd push on various points on the board, twist the transformer/inductors, heating/cooling various components... anything that could trigger intermittent problems.
If you think there's a problem, I'd push on various points on the board, twist the transformer/inductors, heating/cooling various components... anything that could trigger intermittent problems.