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TPS659037: Power Management Unit - TPS659037 : Power Sequencing Behavior

Yoann CHARPENTIER
Prodigy 40 points
Part Number: TPS659037
Other Parts Discussed in Thread: AM5716,

Dear all,

I have a question about a power management IC (ref. TPS6590376ZWSR), this chip is used to supply the uP AM5716AABCDA. The current schematic should respect the TI recommendations between the both chips, my question is :

  • Is it required to program the TPS6590376ZWSR chip ? Or the default power sequence settings are good for the AM5716 chip ?

Best regards

  • 0
    TI__Intellectual 1020 points
    Hello Yoann,
    Thank you for posting your question on the TPS659037 in the e2e forum.
    Your thread has been assigned to the expert within TI, who will reply to your question as soon as possible and attempt to resolve your issue.

    Best regards,
    Eran
  • 0
    TI__Genius 16410 points
    Hello Yoann,

    The device is programmed at TI, so there is no need (nor capability) for customer programming. The TPS659037 user's guide shows the recommended connection between TPS659037 and AM572x/AM571x, so using this configuration with the PMIC will work correctly.

    Please note that we recently released a newer OTP version TPS6590378ZWSR, with an updated power-down sequence to meet the AM57xx requirements. So I suggest to use this device going forward instead of the TPS6590376ZWSR. Since only the sequence changed, there is no need for any schematic/layout updates to use the newer device.

    Regards,
    Karl
  • 0 in reply to Karl Wallinger
    Prodigy 40 points

    Hi Karl,

    Thanks for your answer and advise, but you write that chip is programmed at TI, therefore why we read "Configurable Power-Up and Power-Down Sequences (One-Time Programmable [OTP])" in the datasheet ? What is-it mean ?

    Regards,

    Yoann

  • 0 in reply to Yoann CHARPENTIER
    TI__Genius 16410 points
    Hi Yoann,

    TPS659037 is OTP-configurable, which means the one-time programmable memory can be configured for different sequences. Each part number has a different OTP configuration which supports different sequence, default voltages, etc.

    TI can support new OTP configurations, depending on the business case of the opportunity. If you need this, please contact your local TI support for more information.

    Regards,
    Karl