12V to 6V Regulator at high current

Discussion in 'The Projects Forum' started by Dalton Edge, Nov 4, 2015.

  1. Dalton Edge

    Thread Starter New Member

    Nov 4, 2015
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    0
    I am currently working on a project when I need to step down 12V to 6V. This 6V will serve 3 motors. The motors pull 4 amps, 1.5 amps, and 1 amp when they are each at full power.

    I am having trouble finding a regulator to step the voltage to 6V while still being able to handle high currents.

    What options do I have? The simpler the better!
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  2. Dalton Edge

    Thread Starter New Member

    Nov 4, 2015
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    In addition, the battery is not attached to an alternator. The battery will slowly lose voltage.
     
  3. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    A linear regulator will dissipate huge amounts of power, which means huge heat sinks. (6V*6.5A= 39Watts)
    You need to buy 12V motors, or use a switch-mode buck regulated DC to DC voltage converter.
     
  4. saturnsakini

    New Member

    Jul 10, 2015
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    Mike is right, you should try a DC-DC converter instead of regulator. It can be designed for low voltage and current ripple, so it proide to you 6V regulated output.
     
  5. #12

    Expert

    Nov 30, 2010
    16,252
    6,751
    or use (2) 6 volt batteries...
     
    DickCappels likes this.
  6. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    Provided you charge them one after the other, or using two 6V chargers. Putting batteries in series, and drawing unequal load current from them, and then trying to charge them in series will damage a battery in short order...
     
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