CONSTANT 12V, 25A output from 12v battey

[strameshkumar]

Hi all,
I am using a 12v 100Ah battery. My load is taking 12v, 25A current. when i switch ON the load the voltage decrease to 11.2v .
How to regulate the output voltage. please give me a circuit or guide me to design a circuit.

thanks in advance
Ramesh T

 

[Miguel Lopez]

I think it would be a very complex circuit. You will need a DC-to-DC converter and then regulate the output, using a switching regulator.

On the other hand why do you need to keep it at 12V? Such drop is usually irrelevant for electronic circuits.