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TPSM828301: Is there a specified value for the current consumption when EN=HIGH and there is no load?

user6365974
Prodigy 220 points
Part Number: TPSM828301

Tool/software:

As the title says, I am looking into current consumption under light load.

  • 0
    TI__Mastermind 22490 points

    Hello user6365974,

    thanks for reaching out in E2E.

    The current consumption when EN=HIGH and there is no load should be very close to the specified Operating Quiescence Current when operating in PSM (MODE pin = Low).

    The current thru the FB voltage divider has some impact on the additional current consumption.

    Best regards,

    Andreas.

  • 0 in reply to Andreas Mueller
    Prodigy 220 points
    Thank you for your reply. I didn't quite understand what you meant by "device not switching" in the conditions. What exactly is the situation?
  • +1
    TI__Mastermind 22490 points

    Hi,

    in PSM mode the switching becomes discontinuous. With lowering the load the switching frequency is getting lower and lower. At very light load or no load there are only from time to time some switch events to recharge the output cap. Between these switch pulses the device is not switching, which represents this situation in the table.

    Best regards,

    Andreas.