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LM5166: Low side current Limit in COT Mode

Asha C
Prodigy 190 points
Part Number: LM5166

Hello,

As per the datasheet maximum low side current limit in COT Mode is 415mA , but maximum DC Load output current is 500mA.

If we consider ripple in inductor current to be around 30% of load , then low side current will be more than 415mA right?

Could you please justufy.

Thank you!

  • 0
    TI__Guru* 75865 points

    Hi Asha,

    Thank you for posting.  I think you are right about it, and I guess I understand why you question about it.  Note that I_LS_LIM is introduced to make sure the current does not run away, and it is only activated if the peak current limit is detected.

    Thanks,

    Youhao