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TPS650864: TPS650864 power rail question

Tommy Tzeng
Genius 5690 points
Part Number: TPS650864

Hi Sir,

customer have some question as below:

1. TPS650864 is a series of models. We ZYNQ XCZU4CG-2SFVC784E should choose which model is more suitable for use according to the overall application?

2.Whether the selected part number of the TPS650864 series conforms to the default Power-up Sequence used by ZYNQ XCZU4CG, and can be used without setting through the I2C interface?

3.Our application peripherals need additional independent 5V/1A & 3.3V/4A power supplies. At the same time, these two sets of power supplies also need independent Enable/Disable control pins. Can they be integrated into the TPS650864 power supply architecture? How should it be designed?

4.Can the I2C interface set the fine-tuning range and use timing, can it not be used?

5.Can provide the .DSN file?

6.Please refer to the following list for our system Power Rail:

  • 0
    TI__Mastermind 21715 points

    Hi Tommy,

    1) Take a look at this document for a list of the TPS650864x PMICs and their specs: Using TPS65086x PMIC to Power Xilinx Zynq UltraScale+ MPSoCs

    This document shows which PMICs can support the ZU4CG MPSoC in Table 4-1.

    2) The TPS650864x devices are designed with the correct rail voltages and power-up sequence already programmed into the IC. Figure 6-1 from the above document shows an example of how the TPS6508641 would connect to the ZU+ MPSoC (including the ZU4CG).

    3) The TPS650864x PMICs have additional rails for peripherals, including three Load Switches. However, I would recommend using and additional discrete buck / LDO to achieve the 3.3V/4A and 5V/1A requirements you mentioned. The TPS650864x PMICs have pre-defined power up sequences so a discrete solution would allow you to control the extra bucks separately from the main PMIC.

    4) The TPS650864x PMICs are not meant to be reprogrammed. For custom programming I would recommend the TPS650861, which is our user programmable version of this architecture.

    5) We do not have .DSN files for these devices but we do have Altium files for the PMIC family located here: TPS65086x Hardware Files

    6) This table from the datasheet provides more information on each TPS650864x IC:

    Regards,

    James