12 volt 15 amp voltage regulator

[moe]

Looking for plans for a 12 volt 15 amp voltage regulator that will have a input voltage of 48 volts
Thanks
Moe

[Chris Smith]

Check the National Semiconductor line. <p>They had one all the way to 120 volts input. <p>Also any one of the standard regulators can hold a 37 volt differential, regardless of the input voltage. <p>This means you can input a common LM regulator with 80 volts and drop the difference by 37 volts. <p>National made lots of heavy regulators back in the 80s, 10, 20 amp etc, and you can also use a small regulator with a huge transistor to carry any load. <p>For the minimal loss Buck boost regulators are the best, when used with Fets.

[ezpcb]

Hi Moe,<p>I strongly suggest you using DC-DC. A simple calculator will let you know how many watt will this regulator using up: 15amp x (48-12) = 540Watt! You can use this power supply to bake your bread.<p>A 200W DC-DC power supply won't be too expensive, and it's the realizable way for you

[jwax]

moe- Your plan would depend on whether you're starting with 48 VAC or 48 VDC.

[moe]

Sorry I will be going from 48 volts dc to 12 volts dc with a current draw of 15 amps