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TPS40055: Question about change the current limit point.

David Kim2
Genius 3545 points

Part Number: TPS40055

Hi

I wanna change the current limit point.

I did it like a calculation formula, but it can't be changed.

Therefore, there is no change even if the ILIM resistance is changed to 1Kohm~10Mohm.

Do I have to change other parts besides resistance?

Thanks

  • 0
    TI__Guru 64381 points

    Hi David 

    If the current limit level is lower than your expectation and it doesn't change by changing RILIM, It might be caused by a noise injection. 

    If the current limit level is higher than your expectation and it doesn't change by changing RILIM, it might be cause by a wrong connection on your layout 

    Please refer the equation (16) in the datasheet.  

    - Eric Lee ( Applications Engineering) 

  • 0 in reply to EricLee
    TI__Guru 64381 points

    Hello
    I am closing this thread since I have not heard from you for sometime.
    If you are still trying to resolve the issue, please feel free to open a new thread or reopen this thread. Thanks
    - Eric Lee (Applications Engineering)