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TPS610981: The current problem

Hank Zhang
Expert 2040 points
Part Number: TPS610981

The following figure, VMAIN decreases by 0.1v, resulting in a decrease of 0.3ma in I(ma).Is that normal？

  • 0
    TI__Mastermind 21565 points

    Hi Hank:
    I'm sorry, that I don't sure what the I(ma) mean. and what's the meanings of A load/ D load/"后加2K".
    Please share information with more details, such as the load conduction. 
    Sincerely thanks~

  • 0 in reply to Minqiu Xie
    Expert 2040 points

    I(mA) is Iout（VMAIN+VSUB），”D LOAD“ is the LOAD attached to VMAIN，“A LOAD” is the LOAD attached to VSUB. "后加2K" is when you start running with no load, and then you add 2K of load,

    So you should compare the number 1 to the number 7, the number 1 to the number 8.

    At first there is no load, then the load is added, and the current will increase by 0.3ma.Is that normal?

     

  • 0 in reply to Hank Zhang
    TI__Mastermind 21565 points
    Hi Hank:
    Thanks for your reply.
    According to the datasheet, Vout is remain in the proper range. It's normal from this view.

    But I still confused the test you listed. You could sent private message to me if you have some concern.