Hi..
I am doing a project on SMPS power supply design. My design specification is asfollows:
input voltage is 12v,1A
output voltages required are
7v,700mA; 3.3v,500mA; 1.8v,600mA.
please tell me the combination of regulators i needto use and also the topology to be used to minimize the cost.
Thanks..

 

Hello,

Did you already look at this page:
http://www.maxim-ic.com/cookbook/powersupply/

This page can also be found in the usefull websites thread:
http://forum.allaboutcircuits.com/showthread.php?t=9538

Greetings,
Bertus