Split 24 Vdc Input into Dual 12 Vdc Outputs: Power Divider Product Available?

[DC1101]

I'm a newbie and I apologize for not conducting a thorough search of the site before posting.

I need to know if there is a product available that will "split" input of 24 Vdc/6.25 Amps into two (2) outputs of 12 Vdc/3 Amps each. Anyone here know of such a thing or am I better off building something myself?

Thanks!

 

[edmondng]

i was going to suggest DC-DC converter but i don't think they have any like that. How about just 2 12V linear regulator

http://search.digikey.com/scripts/DkSearch/dksus.dll?Cat=2556290;keywords=12v%20regulator

filter the search for 3A output. You can just use a TO type package or could go smd getting D2PAK

 

[chroot]

Linear regulators are going to be very inefficient if they have to drop 12V and source 3A. They will dissipate a very large amount of heat.

Look into switch-mode buck converters instead.

- Warren

 

[edmondng]

Linear regulators are going to be very inefficient if they have to drop 12V and source 3A. They will dissipate a very large amount of heat.

Look into switch-mode buck converters instead.

- Warren

i guess yeah 3A and 12V drop does seem a lot. buck converter is going to be noisy though but would be more efficient.

 

[chroot]

Most applications that demand 3A of current are not particularly sensitive to noise. DC1101, you might want to tell us more about your needs -- ripple tolerance, etc.

- Warren

 

[DC1101]

Not really sure of my needs - I'm a bit (understatement) out of my realm here. The robotics project is limited to one power source of 24Vdc/6.25A - I just had an idea of splitting the source evenly and powering two units instead of one. I've tried searching but I'm not really sure of what it is I am looking for and I simply cannot phrase it correctly to make google happy. All input GREATLY appreciated!

 

[edmondng]

here's a buck converter
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=AP1501-12K5LDICT-ND

 

[chroot]

Most semiconductor companies that make power products should have something reasonably appropriate. Do a parametric search on their websites. Here's one from National that's 90% efficient:

http://www.national.com/pf//LM/LM25576.html

- Warren

 

[DC1101]

Thanks for the info, Warren - you got me going in the right direction. The LM25576 only has a single output - the LM5642 has the dual output I require. Thanks again!