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Low cost buck regulator - 12v in - 5v@2A & 6.5V@1A out

  1. Jan 19, 2013 #1
    Hi all!

    I am looking for a low cost power regulation solution. Simply put, I need to be able to give a system 12v and get outputs of 5V@2A and 6.5V@1A.

    I was thinking of using two of these with the output in parallel:
    http://australia.rs-online.com/web/p/switching-regulators/6727124/

    And two of these with the output in parallel:
    http://australia.rs-online.com/web/p/switching-regulators/6727089/

    But that would end up costing $40 and I am not even sure if you can put switching regulators in parallel like that.

    So, I am looking for a lower cost solution that is easy to implement. It would be ideal if the components could be bought at RS or Jaycar.

    Any ideas?
     
  2. jcsd
  3. Jan 21, 2013 #2
    BUMP

    Is any anyone able to offer any help?
     
  4. Jan 21, 2013 #3

    NascentOxygen

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    Staff: Mentor

    I would think you cannot simply parallel them.
     
  5. Jan 21, 2013 #4

    NascentOxygen

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    Looking back over past posts at the buck converters previously mentioned in construction projects, I note that vk6kro has referred to the LM2596. If price is a good indicator, it looks okay to me! http://www.ebay.com.au/sch/i.html?_nkw=LM2596

    I'd need to check the technicalities closer, but with 12V in, you are wanting –5V out? Also, +6.5V?
     
  6. Jan 21, 2013 #5
    The LM2596 looks good. I am wanting +5v & +6.5v out.

    I am not certain how I would define the voltage output. I am thinking I adjust that trim pot.
     
  7. Jan 21, 2013 #6

    NascentOxygen

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