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TAS5825M: TAS5825M

user4976799
Prodigy 10 points
Part Number: TAS5825M

Tool/software:

Hi  Lady or Gentlman：

I  want to design select a adapter to power for TAS5825M.  The maxmim power of speaker is 10W which drived by TAS5825M.

I am kindly look forward to help form TI and let me know how to select a suitable power ? What should i consider?

It is better  If have some white paper or trainning video to share me 。

I am looking forwad your feedback.

  • 0
    TI__Mastermind 18240 points

    Hello,

    Thanks for reaching out. 

    To consider your input power requirements you can refer to the efficiency plots we have in the datasheet (example for 4 ohm below). We have the data for various impedances and voltages. You can divide the output power required by the efficiency to understand the input power requirements. I would multiply by a slightly lower efficiency to ensure there is some headroom. You can then divide by your voltage value to know the current requirements. Please keep in mind that these are RMS plots so this will calculate the RMS current needed. 

    Regards,
    Sydney Northcutt

  • 0 in reply to Sydney Northcutt
    Prodigy 10 points

    Thank you very much for your feedback.

    If i select a power adapter which output rating voltage is 12V，  how to define the output the current capacity of the adapter?  What conditions should i consider?  How much margin should i consider?

  • 0 in reply to user4976799
    TI__Mastermind 18240 points

    Hello,

    Please allow 24 hours for a response here. 

    Regards,
    Sydney

  • 0 in reply to Sydney Northcutt
    TI__Mastermind 18240 points

    Hello,

    Thank you for your patience. 

    You can use the same process as I mentioned in the previous response. You can divide the output power by the efficiency then multiply by 2 if two of the same speakers are used. You can then divide by your voltage to know the RMS current requirement. I don't have an exact recommendation for headroom, but there should be sufficient headroom to account for peaks. 

    Regards,
    Sydney Northcutt