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TPS2H000-Q1: Hitting Tsd

Kuramochi Tadahiko
Guru 28715 points
Part Number: TPS2H000-Q1

Hi,

If Tj hits Tsd as below, should we consider that the device was damaged?

Best Regards,

Kuramochi

  • 0
    TI__Mastermind 26295 points

    Kuramochi-san,

    That is not correct. The point of thermal shutdown is to shut off the device and protect it so that the device does not get damaged. After the junction temperature cools to below the thermal shutdown reset level you can assume that the device is fully functional and will operate within the datasheet parameters.

  • 0 in reply to Timothy Logan
    Guru 28715 points

    Timothy-san,

    Thank you for your reply.

    I have a question.

    T(sd) 160℃ is higher than Tj max 150℃ as below.

    I think that the device is damaged when Tj achieves to T(sd).

    Does the device recover after damage?

    Best Regards,

    Kuramochi

  • 0 in reply to Kuramochi Tadahiko
    TI__Mastermind 26295 points

    Hello Kuramochi-san,

    The operating junction temperature is meant to be the steady state DC number that the device is recommended to be operated at. The thermal shutdown threshold is meant for fault/transient conditions and is specifically there to protect the device from being damaged. While it is not recommended to continuously repeatedly hit thermal shutdown the device will not be damaged if you do so.

    The TPS2H000-Q1 is rated as Grade A for the AEC-Q100-012 Short-Circuit Reliability Test. For a cold repetitive short (long pulse) and hot repetitive short in this tests the device is shorted a million times with no effects on reliability. During these short circuit tests the device will reach thermal shutdown several times. For more information on this reliability tests please refer to the following application note:

    http://www.ti.com/lit/slva709

    Best Regards,

    Tim