72 & 110 vdc regulator

Discussion in 'General Electronics Chat' started by IKCTRAJAN, Jan 14, 2016.

  1. IKCTRAJAN

    Thread Starter Member

    Jan 6, 2016
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    i have made 24 vdc regulator to get 24 vdc regulated output with the help of ic LM7824.
    how can i make regulator for 72 vdc & 110 vdc?
     
  2. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    970
    By providing sufficient details..
    Input voltage?
    Current requirements?
     
  3. IKCTRAJAN

    Thread Starter Member

    Jan 6, 2016
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    input ( for both 72 & 110 vdc out put ) is 230 volt ac
    current for 72 volt dc 3 amp. & for 110 volt dc 4 amp.
     
  4. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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    See attachment.
     
  5. DickCappels

    Moderator

    Aug 21, 2008
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    I was about to suggest the TL783 too -a wonderful high voltage solution, then I re-noticed the input voltage (230 VAC), which would be a problem. Also, the current is pretty high for such a large input to output differential, meaning hundreds of watts would be lost in dissipation.

    That brings us to a switching power supply. One of the better choices for this kind of power level is the LinkSwitch line from Power Integrations.

    https://ac-dc.power.com/products/product-archive/linkswitch/

    I would consider breaking the project up into two separate power supplies, particularly if the outputs are to be isolated from theline or ground, unless you have a very strong transformer design background.
     
  6. IKCTRAJAN

    Thread Starter Member

    Jan 6, 2016
    37
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    pl. clear that i have already 0-230 vdc 4amp. capacitor input (pai) filter variable power supply.
    so any circuit which can give me require results ie 72 vdc - 3 amp.& 110 vdc - 4 amp in connection to output of my existing variable dc power supply with short circuit & over load protection will also do.
     
  7. IKCTRAJAN

    Thread Starter Member

    Jan 6, 2016
    37
    0
    in ur suggestion current seems to very low. pl. clear that i have already 0-230 vdc 4amp. capacitor input (pai) filter variable power supply.
    so any circuit which can give me require results ie 72 vdc - 3 amp.& 110 vdc - 4 amp in connection to output of my existing variable dc power supply with short circuit & over load protection will also do.
     
  8. DickCappels

    Moderator

    Aug 21, 2008
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    I am sorry for referring you to the wrong family. Power Integrations' HiperTFS-2 is capable of 568 Watts peak power.
    https://ac-dc.power.com/products/hiper-family/hipertfs-2/

    Power Integration's website is no longer easy to navigate. Here is their product selection chart.
    [​IMG]
    The voltage available is lower than what they usually use for offline power supplies, so the maximum power output will be limited. I won't do the math for you, but at least you can take that into account while evaluating their chips.

    There are lots of other ways to make a buck converter, but if you can make a Power Integrations integrated power supply solution work, it will make your life a whole lot simpler.
     
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