25A 14V DC regulator

Discussion in 'Electronic Components' started by leppert@insight.rr.com, Jul 22, 2006.

  1. Guest

    Anyone have any ideas on a ready made DC/DC regulator that can take
    input voltages from around 10 volts to 14V and output a consistent
    14VDC (or adjustable in that range) at 25A or more? I'm not totally
    against building my own, so a component recommendation would be helpful
    also; however I would prefer a ready made solution. So far I've easily
    found some solutions but they are only good to around 3A or 5A, etc.

    Thanks,

    Jonathan
     
    , Jul 22, 2006
    #1
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  2. PeteS Guest

    wrote:
    > Anyone have any ideas on a ready made DC/DC regulator that can take
    > input voltages from around 10 volts to 14V and output a consistent
    > 14VDC (or adjustable in that range) at 25A or more? I'm not totally
    > against building my own, so a component recommendation would be helpful
    > also; however I would prefer a ready made solution. So far I've easily
    > found some solutions but they are only good to around 3A or 5A, etc.
    >
    > Thanks,
    >
    > Jonathan


    Will the output always be above the input or not?

    If it will, then you need a straight (adjustable) boost converter
    although not all converters can do Vout = Vin. You'll need to be
    careful about dropout. There are some adjustable OTS converters
    available in this range. Try this search for a decent outline
    'dc dc modules' at google.


    If the output will vary both above and below the input, then you would
    need to use perhaps a SEPIC [single-ended primary inductance converter]
    style device. There are a number of solutions in this area. National,
    TI, Maxim and Linear tech all make controllers designed for this type
    of application.

    If you need a converter that can go above and below the input, it's
    possible but unlikely you'll find a premade module.

    Cheers

    PeteS
     
    PeteS, Jul 23, 2006
    #2
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