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TPS6594-Q1: TPS6594-Q1 setting

Shinji Mada
Prodigy 101 points
Part Number: TPS6594-Q1
Other Parts Discussed in Thread: TPS6594EVM

Hi Team.

I am designing a circuit using the TPS6594****.
And I think that the TPS65941319/TPS6594133A is suitable because the BUCK configuration in NVM is 2+1+1.

So here's the question.
Q1)  NVM is only for initial settings, and I think that the settings can be changed arbitrarily via I2C after the TPS6594 starts up. Is this correct?
        (For example, voltage value, slew rate, GPIO settings, etc.)
        In other words, regardless of NVM-ID (TPS6594****), can it be used in the same way by register settings?

Q2) Where are the primary and secondary settings?


Thank you.

  • 0
    TI__Expert 4340 points

    Hi Shinji,

    For the static settings, that is correct. The settings can be changed via I2C after the TPS6594 starts up. The difference comes in the PFSM settings. The triggers, power up and power down sequences, and safety states will vary between the NVMs, which cannot be changed after startup. Triggers can be masked, but new triggers cannot be added.

    The settings for these devices are written in the user guides. For convenience, I have provided the links to the devices you mentioned may work for your application.
    TPS65941319-Q1 PMIC User Guide for Sitara AM65 Processors
    Powering Jacinto 7 SoC For Isolated Power Groups With TPS6594133A-Q1 + Dual HCPS

    You are also able to create your own NVM using the GUI and the Scalable PMIC's GUI User’s Guide (Rev. B). This will allow you to create an NVM that exactly matches your use case if the TPS65941319 and TPS6594133A do not fit your application.

    Regarding your second question, what do you mean by primary and secondary settings? Both the TPS65941319 and TPS6594133A are single-PMIC solutions which do not have a secondary TPS6594-Q1 PMIC.

    Regards,
    Megan

  • 0 in reply to Megan Singer
    Prodigy 101 points

    Hi Megan,

    Thank you for your reply. I understand the answer for the first question.


    About second question..
    Since it was described as Secondary in the TPS65941111 user guide, I wondered if there was a register/NVM to set.
    TPS65941319/TPS6594133A are only Primary, it doesn't matter, so I will withdraw this question.


    TPS6594EVM page says "The primary difference between the boards is the phase configuration setup of the quad-phase bucks (BUCK1-BUCK4) which can be combined in 5 different combinations (1+1+1+1, 2+1+1, 3+1, 4, or 2+2). "
    But I found only 2 bouards, TPS65941111EVM & TPS65941212EVM.
    Where can I buy an EVM with the TPS65941313/TPS6594133A?

    Thanks.

  • +1 in reply to Shinji Mada
    TI__Expert 4340 points

    Hi Shinji,

    Good to know the initial questions have been answered! For reference, in a multi-PMIC solution, the primary/secondary devices are identified by the Controller ID (CID), previously named Master ID (MID), and the Target ID (TID), previously named Slave ID (SID) on the SPMI bus. If these values needed to be changed, these would be in the SPMI_MID and SPMI_SID lines of the NVM. This is handled automatically by the Scalable PMIC's GUI when the devices are added to a configuration.

    We do not provide an EVM with TPS65941319 or TPS6594133A soldered onto the board. The TPS65941111EVM and TPS65941212EVM can both be changed to contain a TPS65941319 or TPS6594133A by updating the NVM. This process using the GUI is outlined in the NVM Configuration Page of Scalable PMIC's GUI User’s Guide (Rev. B). You also have the option of replacing the PMIC on the board with a loose device already programmed with the NVM if you do not want to reprogram the device.

    As for the phase configuration of the EVM, there are pads on the bottom of the EVM that allow for the different phase configurations to be used. The Phase Config table on the bottom silkscreen of the EVM shows which jumpers and 0 Ω resistors should be populated. For the 2+1+1 configuration, R1, R2, R5, R7, and J23 should be populated, and R3, R4, R6, J24, and J25 should not be populated. More information can be found in the Changing the Phase Configuration section of the TPS6594x Evaluation Module User's Guide (Rev. A).

    Regards,
    Megan

  • 0 in reply to Megan Singer
    Prodigy 101 points

    Hi Megan, sorry for the late reply.

    Thank you for your reply and detailed explanation.

    If I have any questions, I will ask again.

    Thank you.