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Question of TPA3110D2-Q1 automatic-recovery mode

Tomoaki Yoshida
Expert 2200 points
Other Parts Discussed in Thread: TPA3110D2-Q1

Hi,

 

I have a qustion of TPA3110D2-Q1 automatic-recovery mode for short circuit protection.

I would like to know about the time of an automatic-recovery.

How much is the time when the Fault output has actually fallen on Low?

If it can do, three data, min, typ, and max, will want to know.

And what decides on this time?

 Internal OSC? or refresh time of an discharge of FAULT terminal?

Since it is going to be cared by design by me, I would like to grasp the affecting factor.

Thanks.

 

  • 0
    TI__Expert 5675 points

    Hi Tomoaki,

    An application engineer was assigned to this problem and will follow up in the next few days.

     

    Best regards,

    Jason Liu

  • 0
    TI__Genius 14890 points

    Yoshida-san,

     

    This feature was not characterized in detail and so I do not have data to give you for your questions. However, I can give the typical timings to you. The device resets based on internal OSC (turn on time after power-down). The Turn on time of the device after SD >= 2V is 14ms typical, the turn off time for the device after SD <=0.8V is 2us typical.

  • 0 in reply to Alexander Scheuermann
    Expert 2200 points

    Hi Alex,

     

    Thank you for your reply.

    I understood the time is decided for by turn on and the turn-off depending on internal OSC.
    Although I think that I am probably controlling the recovery sequence by internal OSC timing inside, do I hear that it is fundamentally dependent only on an internal clock?

    Although the maximum of the inside OSC and the minimum are defined as the datasheet, is that the time of turn-on and a turn-off of the variation in the inside OSC is also comparatively the same thought?

     

    Although I may not understand about exact time, near variation wants to know.

    I want to know the time when the FAULT terminal has fallen on low as same reason.

     

    thanks.

  • 0 in reply to Tomoaki Yoshida
    TI__Genius 14890 points

    Yoshida-san,

     

    Yes, the turn on time depends on the internal OSC. The time from fault detection to the FAULT pin going low, however, I do not know. I could give you typical information from the bench if that would help?