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EVMK2H: EVMK2HX Heat sink and fan

6064524
Prodigy 90 points

Part Number: EVMK2H

We are looking to use an EVMK2HX module in a 1U chassis with right to left fan driven airflow.  Our processing needs are confined to the 4 ARM Cortex-A15 cores, however we have not looked into turning off the DSP cores. 

The fan on top of the EVMK2HX CPU's heat sink prevents the module from fitting in the chassis.  Based on visual inspection of the EVMK2HX board and documentation found online (http://wfcache.advantech.com/www/support/TI-EVM/download/XTCIEVMK2X_Technical_Reference_Manual_Rev1_0.pdf), it appears that the fan is designed be removed if alternate airflow is provided.  Is that correct?

If so, is the right-to-left airflow provided by the chassis problematic?  The EVMK2HX heat sink is mounted for front-to-back airflow.  Should and can the heat sink be rotated 90 degrees to support side-to-side airflow?  Or is it overspec'd for using only the ARM cores and ok to use as is (with some additional investigation into back pressure on the fan)? 

Thanks!

   - bob g.

  • 0
    TI__Guru 50170 points

    Hi, Bob,

    Turning the heat sink should be ok if it fits mechanically. We have not done it before. The K2H is overspec'd but it was rated for lab use in room temperature and not in the chassis. You will need to do thermal analysis if you decide to remove the fan.

    Rex