5V Regulator for Light Weight RC?

Discussion in 'General Electronics Chat' started by Cburg, Oct 29, 2013.

  1. Cburg

    Thread Starter New Member

    May 16, 2012
    13
    1
    Hi Forum,

    Can someone help me find a voltage regulator chip that is hopefully SMD or small, light topography for use with (2) LiPo's in receiver circuit of an RC glider? Need to handle 1.0 to 1.5 Amps. I could use one cell and a boost regulator too?

    Thanks!
    Mike
    :cool:
     
  2. #12

    Expert

    Nov 30, 2010
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    ErnieM likes this.
  3. Cburg

    Thread Starter New Member

    May 16, 2012
    13
    1
    Cool stuff!
     
    #12 likes this.
  4. bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    507
    Run the 2 LiPo cells in series and buck it down to 5V with a high freq switcher. If you want best efficiency and minimum power dissipation, stay away from the simple switchers and get a synchronous rectifier controller with external FETs. You can get those designs well above 90% efficiency. A simple switcher is not efficient when Vin is close to Vout.
     
  5. #12

    Expert

    Nov 30, 2010
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    Where would one get information on that kind of circuit?
     
  6. THE_RB

    AAC Fanatic!

    Feb 11, 2008
    5,435
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    Google for "SMPS controller synchronous rectification". :)
     
  7. #12

    Expert

    Nov 30, 2010
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    I don't have time to research that right now. I can only hope the google answers include a calculator and circuit boards for sale.
     
  8. bountyhunter

    Well-Known Member

    Sep 7, 2009
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    If this is going into a model plane, I figured it would have to be a custom board to save size and space.
     
  9. bountyhunter

    Well-Known Member

    Sep 7, 2009
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    You can also go directly to TI or Maxim or Linear Technology and look using their search devices. Sync rec controllers are really popular, there are lots of them around.
     
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