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Required datasheet of DR-C2002 ATX Power Supply I.C.

Discussion in 'Datasheets, Manuals or Parts' started by saibal_digitalsystems, May 19, 2009.

  1. saibal_digitalsystems

    saibal_digitalsystems New Member

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    Pl . send me the datashhet and equivqlent I.C. of DR-C2002 ,found in ATX Power supplies.

    Thanks,
    Saibal.
     
  2. hotwaterwizard

    hotwaterwizard Active Member

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    This is what I found so far.
     

    Attached Files:

  3. microtexan

    microtexan New Member

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    Biting tongue, being nice today!:D

    But nice drawing there, Wizard
     
  4. dave

    Dave New Member

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  5. Ivellius

    Ivellius New Member

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    I need it too, thanks.
     
  6. edy78

    edy78 New Member

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    If i want to up the dc 12v output to dc 13,8v. What should i do. Thx.
     
  7. edy78

    edy78 New Member

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    Any can help me upgrade 12v to 13.8v power supply atx with ic dr-c2002?
     

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  8. ronsimpson

    ronsimpson Well-Known Member Most Helpful Member

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    I do not have enough information to say. This is just a guess.
    MAYBE:
    It looks like a error amplifier at pins 43/44.
    The supply is looking at 12V and 5V for DC and also looking at 3.3V for ripple.
    These supplies were never designed to run with 5V unloaded!
    There is a voltage divider: R60 & R62 pulls up. R40 & R39 pulls down.
    If you want to increase the output voltage by 10% try decreasing R40 by 10%. (put a 730k across R40)
    The idea is to pull down on pin 44 a very small amount more so the supply will increase the output voltages slightly.
    You probability can not get more than 15% more voltage before you hit a limit.
    Good Luck

    upload_2017-11-23_8-58-31.png
     
  9. edy78

    edy78 New Member

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    Thx alot.
    But the problems had been solved.
    I removed R34 and R35, and change its with VR 10K Ohm.
    Finally I got 13,5Volt DC output.
     

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