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TMS320F28062: what caused the difference of recommended operating temperature between TMS320F28062PZPS and TMS320F28062PZT

Part Number: TMS320F28062

Hi,

since both device's absolutely maximum temperature are 150C.

I wonder why do we have different parameters for recommended operating conditions?

Is it just because we test PZPS device under 125C, but we only test our PZT version device under 105C?

My customer's end equipment may increase to 115C, they wonder if we have any statistic to show how PZT version device would behave in such a condition? For example, like frequency deviation. Because they have chosen PZT before and PZPS has thermal pad which is not fully pin to pin compatible.

  • Howard,

    You are correct, that the "T" suffix version is only tested to 105C operation, vs 125C for the "S" version.  The 150C max operational temperature is the max allowed temp either device can operate at without damaging the device; neither device is guaranteed to meeting timings at 150C.

    I believe the reasons that the "S" devices has power pad is to help better dissipate the self heating so that these devices can operate at the higher temps under full load.   

    Best,

    Matthew