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    stacking voltage regulator to get more amperage

    Is it possible to get more amperage by connecting two same voltage regulator chip
    http://pdfserv.maxim-ic.com/en/ds/MAX603-MAX604.pdf

    in parrallel?

    •   Alt29th September 2005, 10:19

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    Re: stacking voltage regulator to get more amperage

    may be, but not recomended
    and at output of each regular chip use with resistor , e.g : 0.1 / 1 Ohm



    •   Alt29th September 2005, 11:29

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    Re: stacking voltage regulator to get more amperage

    Amperage can be increased by connecting parallel transistors
    http://www.mitedu.freeserve.co.uk/Ci...er/1230psu.htm



    •   Alt29th September 2005, 13:41

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    stacking voltage regulator to get more amperage

    is there a draw back to the circuit b/c it seems really simple and good.



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    stacking voltage regulator to get more amperage

    Well I didnt used the circuit the same circuit but have used the same principle to increase the amperage (only one transistor) of one of my circuit when I was in college and it just worked fine for me.
    I guess this is a well Known method of increase the amperage for power supply



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    Re: stacking voltage regulator to get more amperage

    Yes, most regulator datatsheets show similar circuits. They work well.



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    Re: stacking voltage regulator to get more amperage

    the only drawback would be that the regulator is a linear regulator. hence if you draw too much current and drop too much voltage across the regulator, you would be dissipating lot of heat. you can use a switching regulator instead (smps of an old comp.)



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    stacking voltage regulator to get more amperage

    the problem would be mismatch - if one device was 2mv high, and the next was 2mv low, first device would drive all the power while the second was off.

    that was khongai's suggestion - a small ballast resistor drops some voltage dependent on load that tends to even out the mismatch.

    in general i would suggest against paralleling these, but with ballasting you could probably get away with it.



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