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DM814x or Am387x or C6A814x Heat sink and fan needed?

K Md Feroz Irfan
Expert 7225 points

Hi Champs,

Please confirm

In general,  upto what W do we not need the heat sink and Fan? 

Best Regards

Feroz

  • 0
    TI__Genius 15310 points

    Irfan,

    Please see this link:

    https://e2e.ti.com/support/dsp/davinci_digital_media_processors/int-dm814x/f/720/t/152607.aspx#557489

    Let me know if it does not answer your question.

    BR,

    Viet

  • 0 in reply to Viet Dinh
    TI__Expert 7225 points

    Hi Viet,

    Sorry about this.However I am not really sure if this satisfies my customer's query. 

    Questions:

    Is a heat sink required at all for DM8148 as we claim to be < 2.5W?

    If so what are the receommended specs of the heat sink?

    Is a fan needed?

    Best Regards

    Feroz

  • 0 in reply to K Md Feroz Irfan
    TI__Genius 15310 points

    Feroz,

    Our PE is out of office until 3/13.  I have asked him for support.  Please ping us again if you don't see the response by then. 

    BR,

    Viet

  • 0 in reply to Viet Dinh
    TI__Genius 15310 points

    Hi,

    This is what I got back from designer:

    "Whether or not a heat sink or fan is needed is based on yours system. System level modeling should be used to determine if the device will operate under the specified operating temperature without the heat sink/fan. In general, for a Jedec type 2S2P board, heat sink may not be needed for up to 3W. However, we strongly recommend customers confirm this with a system level thermal model.   Customer should use system level thermal model to confirm if they need forced convection (air flow) on top of the heat sink. Board size, Cu thickness, placement of other components on board, location of processor on board, ambient temp etc all play a role whether forced air would be needed or not."

    BR,

    Viet

  • 0 in reply to Viet Dinh
    TI__Expert 7225 points

    Thanks a bunch Viet!