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[TPS659037] Confirm the transition definition from asserting the POWERON pin until REGEN1 Enable.

Kaka
Guru 24520 points
Other Parts Discussed in Thread: TPS659037

Hi TI Experts,

Please let me confirm the following question.

[Question]
Is TPS659037 defined the specification of the typical/Maximum duration time from asserting(LOW -> High) POWERON pin until enabling the "REGEN1" pin?

If yes, would you please teach me them?

I referred the Figure-7 on  "TPS659037 User's Guide to Power AM572x and AM571x" but there is not uncleared this specification.

Best regards.
Kaka

  • 0
    Guru 24520 points
    Hi

    Would someone please provide your comments?

    Best regards.
    Kaka
  • 0 in reply to Kaka
    TI__Genius 16410 points
    Kaka,

    Sorry for the delay.

    The time from ON request to LDO2 is not specified. Typically this is ~5ms, but this time can be longer if VCC is supplied at the same time as the ON request. If you need to use a maximum value, 15ms is a conservative maximum value.

    We do specify the maximum time for the sequence starting from the first rail. Each of the delay values listed are typical values, and these have +/- 10% tolerance. So to calculate the maximum time, I would use 15ms, plus each of the 550us (+ 10%) sequence delays to get the total time.

    Regards,
    Karl
  • 0 in reply to Karl Wallinger
    Guru 24520 points
    Hi Karl,

    Thank you for your response.
    I will inform your comment to my customer.
    If I get more questions, please let me confirm them.
    Best regards.
    Kaka