How to step down or convert 48vdc to 12vdc
Please share the circuit

 

With voltage regulator which would need huge heatsink.

 

Hello,

You just hyjacked an old existing thread: http://forum.allaboutcircuits.com/threads/48vdc-to-12vdc.2215/
Now you have your own thread.

Bertus

 

for commercial dc to dc converters, see the usual suspects, digikey, newark and such. 48 volt battery systems are getting to be very popular in industrial lifts and such.

 

LM2576/LM2576HV Series,3A Step-Down Voltage Regulator.
Wide Input Voltage Range, 40V Up to 60V for HV Version.

 

it might be usefull to have the current required.