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Thread: need help, finding a dc/dc converter

  1. #1
    Join Date
    Nov 2014
    Location
    mid michigan
    Posts
    792

    Default need help, finding a dc/dc converter

    my 532mn bench laser is expressing it's desire to be used at camp fires with a scanning line generation. but my problem is the controller -5 g +5 so split rail the DC/DC converters i am finding either need 18 volts to start pr the ones that will run on the 12 volts i need don't have enough current. The 5 volts at one amp for the laser and -5 volts for the TEC control at 1 amp or so, the ones i am running into only start to work at 18 volts, i would rather not need to build a battery to this and am hoping that you guys can help me on this split rail, 5 volts + and - or two 12 in 5 out dc/dc isolated output, if i can get 2 that are isolated i am make it work with 1-2 amp on the current for both rails.
    the reason for this is it will be operated in a rural area with no ac, the fire pit is to far from the house
    my only other recourse is to build a custom battery using 16850 cells and just liner regulator ic's
    Polk SDA SRS, Parasound HCA 3500, Luxman M117, Onkyo 504, 7.62X39, sometimes a ball on a string is the greatest of toys for us nonhuman types. oh and some lasers, lots of lasers

  2. #2
    Join Date
    Mar 2007
    Location
    Portland Oregon
    Posts
    118

    Default

    Take a look at these from Digi-key...

    CC10-1205SF-E 12v nominal input 5v 2A out isolated $26.26 each
    or

    CC6-1205SF-E 12V nominal input 5v 1A out isolated $15.96 each

  3. #3
    Join Date
    Nov 2014
    Location
    mid michigan
    Posts
    792

    Default

    thank you for the help, i have 2 on order
    Polk SDA SRS, Parasound HCA 3500, Luxman M117, Onkyo 504, 7.62X39, sometimes a ball on a string is the greatest of toys for us nonhuman types. oh and some lasers, lots of lasers

  4. #4
    Join Date
    Nov 2014
    Location
    mid michigan
    Posts
    792

    Default

    Here is the basic device i built today as i found the little guys on my porch this morning, main red is the remote on, the smaller red is the +5 volts and green is - 5 volts
    Click image for larger version. 

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    Polk SDA SRS, Parasound HCA 3500, Luxman M117, Onkyo 504, 7.62X39, sometimes a ball on a string is the greatest of toys for us nonhuman types. oh and some lasers, lots of lasers

  5. #5
    Join Date
    Mar 2007
    Location
    Portland Oregon
    Posts
    118

    Default

    Your circuit board looks very neat and well made.
    With the 9-18 volt input range and their high efficiency, these can use
    all of the available charge from four LiFeP04 or Li ion batteries for portable use.

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