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24 Vdc Power Divider

  1. Feb 20, 2008 #1
    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!
     
  2. jcsd
  3. Feb 20, 2008 #2
  4. Feb 20, 2008 #3

    chroot

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    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
     
  5. Feb 20, 2008 #4
    i guess yeah 3A and 12V drop does seem a lot. buck converter is going to be noisy though but would be more efficient.
     
  6. Feb 20, 2008 #5

    chroot

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    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
     
  7. Feb 20, 2008 #6
    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!
     
  8. Feb 20, 2008 #7
  9. Feb 20, 2008 #8

    chroot

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    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
     
  10. Feb 21, 2008 #9
    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!
     
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