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TMS320F2808: Over/Under Voltage

Linda Igboanugo
Intellectual 1810 points
Part Number: TMS320F2808

I am using the TI DSP & analysis shows that there is a slight minor outage to the Recommended Operating specification stated in 6.2 page 94 of the datasheet (SPRS230N, revised May 2012).

3V3 - Rail exceeds recommended overvoltage operating condition of rail max +3.47V by a very small margin

1V8 - Rail exceeds recommended overvoltage operating condition of rail max +1.89V by a very small margin

 

My Question is:

• What is the likely effect  (operational, power dissipation or reliability) of exceeding the recommended operating overvoltage limits?

  • 0
    TI__Guru* 93655 points
    You have not mentioned the magnitude of this “very small margin” and its duration. Regardless, TI always recommends staying within the Recommended Operating Conditions.

    If the voltage rail is exceeded for a short duration (during power on or off for example), then risk to other functional specifications is low. If the Recommended Operating Conditions are exceeded in a DC condition for the life of the product then both functional specifications can be impacted and some reduction in life can occur. This would be a higher risk condition and you will need to assess this risk at the system level.