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TLV702: TLV70233: Recover time of over-current and over-temperature

Ansel Song
Expert 3890 points
Part Number: TLV702

Hi team,

As written in the data sheet of TLV70233: it has over-current protection and thermal shutdown protections. 

But our customer wants to know the recovery time of over-current and overheating.

For example, the thermal shutdown  is 165℃, and the recovery threshold is 145℃. 

So how long can it return to normal output when the temperature is lower than  145℃ ?  Similarly, what about the recovery time of over-current protection?

Thanks.

Best regards,

Ansel Song

  • 0
    TI__Guru 50090 points

    HI Ansel,

    The recovery from a thermal shutdown event is when the device falls below ~145℃. The timing will be a function of the PCB ambient temperature and layout. 

    If the device is in over-current and does not enter into thermal shutdown, the recovery is simply when the over-current event has ceased. Normally over-current events lead to thermal shutdown as when in current limit the output voltage falls and the (VIN-VOUT)*ILOAD power dissipation increases. 

    I hope this answers your question.

  • 0 in reply to JCHK
    TI__Expert 3890 points

    Hi JC,

    Yes, I know that there is usually no specific value to describe the recovery time.

    But have you tested it on EVM or other boards? Is there a reference data? Thanks.

    Best regards,

    Ansel

  • 0 in reply to Ansel Song
    TI__Guru 50090 points

    HI Ansel,

    While we don't typically characterize the recovery time, it does tend to be on the order of a few ms.

    Regards,

  • 0 in reply to JCHK
    TI__Expert 3890 points

    Hi JC，

    Ok, Thanks for your patient reply.

    Best regards,

    Ansel