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  1. #1
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    MP1584 5v regulator voltage drop problem

    I was debugging the MP1584 module, 5v regulator circuit in the PCB.
    I have attached my debug circuit below.

    Click image for larger version. 

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    I have completed my circuit in breadboard and PCB also, but I was connected to any load below 2A.

    It will produce the voltage drop and alternative output voltage.

    Mp1584 specs : max 3A , i/p volt = 4.5v to 28v , my i/p volt = 12v

    I need 5v output and less than 2A current

    MP1584 datasheet :

    https://www.monolithicpower.com/pub/...P1584_r1.0.pdf

    can anybody help this problem...???

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  2. #2
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    Re: MP1584 5v regulator voltage drop problem

    You didn't report the observed problem, just a vague question title.



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  3. #3
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    Re: MP1584 5v regulator voltage drop problem

    Hi,

    What is the problem?

    Klaus
    Please donīt contact me via PM, because there is no time to respond to them. No friend requests. Thank you.



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  4. #4
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    Re: MP1584 5v regulator voltage drop problem

    When I connected to load , the output voltage is dropped.



  5. #5
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    Re: MP1584 5v regulator voltage drop problem

    Hi,

    Please try to give useful informations.
    * I can't find information about voltage drop in post#1.
    * Now we know that you are concerned about voltage drop. But we don't know how much (maybe I just didn't find it?)
    --> A bit of voltage drop is quite expectable.

    But "no load voltage" often is not useful. Most voltage regulators are specified with "minimum load". I recommend to use at least 5mA of minimum load (1 kOhm) to get comparable measurement results.

    ***
    I see you used a breadboard. This is not useful because you usually cant fulfill layout considerations with a breadboard. Did you read and keep on "PCB LAYOUT GUIDE" section of the datasheet? It is essential for proper operation.

    Klaus
    Please donīt contact me via PM, because there is no time to respond to them. No friend requests. Thank you.



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