This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS54061: Is it OK to output 320mA(max) and 220mA(typ)?

Part Number: TPS54061

Hi team

Is it OK to use TPS54061 with the output about 340mA(max)/220mA(avrage) like the attached?

Regards,

Noriyuki Takahashi

  • Hello,

    The maximum continuous load for this device is 200mA.

    The high side current limit will vary between 250mA and 500mA:

    If the peak inductor current reaches the current limit threshold, the device will enter current limit operation.

    Best Regards,

    Katelyn Wiggenhorn

  • Katelyn

    In this case, the output current is 220mA continuously and current limit doesn't work because this is less than current limit.

    I would like to understand whether 220mA is guaranteed value of this device or not(whether 220mA can cause any failure of this device, I mean).

    Regards,

    Noriyuki Takahashi

  • Hello Takahashi,

    The current limit will be triggered when the peak inductor current reaches current limit. The load current which correlates with the peak inductor current=current limit level will depend on the inductor chosen/VIN/switching frequency. You can see in the datasheet: "Use Equation 29, to make sure the minimum current limit on the high-side power switch is not exceeded at the maximum output current."

    You want to make sure that the device will not enter in to current limit protection during normal operation.

    Please let me know if there are any remaining questions.

    Best Regards,
    Katelyn Wiggenhorn