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c6455 heat

james camron
Prodigy 110 points
Other Parts Discussed in Thread: TMS320C6455

does heat Damage to c6455?if i use C6455 without heat-sink it require to heat-sink Basically? it heat depend on the clock? Does it need to a fan for high clock?

  • 0
    TI__Guru* 84110 points

    James,

    Yes, exceeding the maximum case temperature of the TMS320C6455 should be expected to damage the device. It may have reduced lifetime or reduced performance or other negative effects.

    The datasheet has a section on Operating Conditions and that includes the Absolute Maximums for operation. The maximum case temperature is shown as either 90C or 105C depending on which device version you are purchasing.

    There is a Power Consumption application note that you can use to get an estimate of the power that will be dissipated at the operating points that you determine for the device in your application. With that power dissipation information, you can apply your knowledge of the thermal environment of your board to determine if a heat sink and/or forced airflow are required.

    Regards,
    RandyP

  • 0 in reply to RandyP
    TI__Mastermind 46460 points

    James,

    The C6455 is a relatively low power.  Most applications will not need thermal management and system thermal design.  However, operation on dense boards with other heat-generating devices or in chasses with limited airflow or inhigh ambient temperature conditions will cause you to need to add a thermal solution.  Normally, this is as simple as adding a heatsink and making sure there are paths for convective airflow such as through vents.

    Tom

     

  • 0 in reply to Tom Johnson 16214
    Prodigy 110 points

    hi

    thank to all friends

    my c6455 isn't near heat-generating devices.but it is heated when i run program.in my program cpu clock is near 1GHZ.i think  working with this clock  or if  the process is high and complicated maybe caused warming the c6455 And raise its temperature And eventually cause damage to it.

    I mean that Is it possible it's a damaged  by its temperature?

    Is it possible to damage the 6455 in heavy and prolonged processing?

    Is this type of processing is required to heat-sink or airflow?

  • 0 in reply to james camron
    TI__Mastermind 46460 points

    How hot is it getting?  It is rated for proper operation with no loss of reliability when operated with a case temperature up to 85 degrees Celcius.  You can use the power estimation spreadsheet to calculate the maximum power dissipated.  That combined with the datasheet numbers will provide a first-order approximation of the expected temp rise during operation.  Please pull this down from the website.

    Tom