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AM623: Use of the am6231 power estimation tool and loss estimation of its PMIC TPS6521904

?? ?
Prodigy 30 points
Part Number: AM623

Tool/software:

1. About the use of am6231 power estimation tool:

I have enabled the relevant functions according to the actual application of the product, but how should I understand and fill in the Utilization column? I don't quite understand the meaning of Utilization.

My purpose is to evaluate the maximum power consumption of AM623 in our application scenario.How should "utilization" be filled in?

2. TPS6521904 loss estimation:

AM6231's dedicated PMIC TPS6521904 has 3 BUCKs and 4 LDOs, as well as some gpio and i2c. I want to evaluate the TPS6521904's own loss when inputting 3.3V. Is there any evaluation method? Because the loss of the 4x LDO may be related to the load, but is the efficiency of the buck and other losses quantified?

  • 0
    TI__Mastermind 22156 points

    Hi,

    Thank You for using E2E. The utilization is use case/application specific. As noted in the PET application note, the CORE utilization lets the user load each compute core with utilization between 0%-100% (inclusive). For guidance, 0% is an “off” or “unused” state. 1% is “idle”. 100% is maximum utilization (i.e. Dhrystone). The LVCMOS IO/Peripheral utilization specifies the utilization as a percentage of activity relative to a full load condition.

    The TPS6521904 PMIC is used in the AM62x starter kit. Here is the link to the hardware page where you can access design files and other resources: https://www.ti.com/tool/SK-AM62B-P1. 

    The PMIC also has an efficiency and thermal estimation tool. Here is the link: https://www.ti.com/tool/download/SLVRBL7

    Thanks,

    Brenda

  • 0 in reply to Brenda Diaz
    Prodigy 30 points

    Thank you for your answer. I have a few more questions.

    1、"Utilization is use case/application specific."

    What is the specific use case/application?

    2、"The LVCMOS IO/Peripheral utilization specifies the utilization as a percentage of activity relative to a full load condition."

    I don't understand how to evaluate LVCMOS IO/Peripheral  utilization.Can I use the Linux command "ps" or "top" to check the utilization of related programs?

    Or I don't consider the actual utilization rate. I just want to get the maximum power consumption. Can I fill all the used LVCMOS IO/Peripheral's utilization with 100% to get the maximum power consumption?

  • 0 in reply to ?? ?
    TI__Mastermind 18020 points

    Hello,

    'htop' is useful for seeing the utilization on different A53 cores in Linux. You can also refer to perf_stats under '/opt/edgeai-gst-apps/scripts/perf_stats'

    Thanks,

    Anshu

  • 0 in reply to Anshu Madwesh
    Prodigy 30 points

    Thank you for your answer.

    1、The "perf_stats" used to get the CPU,DDR and HWA loading.HWA loading does not seem to refer to the LVCMOS IO/Peripheral's utilization.

    2、I just want to estimate the maximum power loss. Can I fill in 100% of the IO/Peripheral's utilization?

    Thanks.

  • 0 in reply to ?? ?
    TI__Mastermind 22156 points

    Hi,

    Yes, to estimate the maximum active power you could set the utilization to 80%-100% for the SoC resources used on your application.  

    Thanks,

    Brenda