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RTOS/AM5746: Power consumption support

Kaka
Guru 24520 points
Part Number: AM5746
Other Parts Discussed in Thread: POWEREST

Tool/software: TI-RTOS

Hi TI Experts,

Please let me confirm the following question.

According to the datasheet, it said that "Maximum power consumption for this SoC depends on the specific use conditions for the end system. Contact your TI representative for assistance in estimating maximum power consumption for the end system use case.".

So, we would like to know the maximum power consumption specification for each power lines of AM5746. Can you support us except for providing the power estimation tool on web site?

Best regards.
Kaka

  • 0
    TI__Genius 13567 points
    Hi Kaka,

    The Power Estimation Tool is available at this link POWEREST.

    Scroll down to where you see "AM574x Processors". Click that link and it will open our application note with details on how to use the PET. And on the first page is the download link for the "zip" file that contains the Excel spreadsheet / PET.

    The AM574x chip is not yet released to manufacturing (TMDX status). Until TMDS is reached, the power estimates are not accurate since we are working with preliminary data ourselves. Compared to AM572x the AM574x will consume more power, but how much more is not yet quantified (but within the range of 20% to 50%). You'll want to go with AM572x unless ECC is an absolute requirement.

    Regards,
    Ahmad
  • 0 in reply to Ahmad_Rashed
    Guru 24520 points
    Hi Ahamd,

    Thank you for your response.
    I could find the PET for AM574x at AM5746 product folder.
    www.tij.co.jp/.../spracf6.pdf
    I have already informed this to our customer.

    By the way, they has requested to us to provide the PET example use-case.
    Could you share it to us?

    Best regards.
    Kaka
  • 0 in reply to Kaka
    TI__Genius 13567 points

    For worst case power, use the "max" option from the drop-down menu in the operating conditions section and use "typ" for the processing "profile" down in the modules (or dhrystone for the MPU). If you choose max, this will use a worst case model that is typically not achievable in normal conditions so it's not recommended to use other than to give scary numbers.

    Does the customer's application use the DSP? The "max" processing profile for the DSP is a synthetic benchmark that achieves 8 instructions per cycle that is typically difficult to achieve. So that is an example where the "max" profile shouldn't be used.

  • 0 in reply to Ahmad_Rashed
    Guru 24520 points
    Hi

    Thank you for your response.
    Our customer will not use the DSP for their application.
    Only used the A15x2 , M4x2 and PRU-ICSS.


    Best regards.
    Kaka
  • 0 in reply to Kaka
    TI__Genius 13567 points
    FYI the tool for AM574x is not final yet. An update will come out in December as the power models are verified and finalized. For now use the "max" estimation mode option at the top of the sheet and this will help with understanding your worst case power.