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

over 4 years ago

0 JCHK over 4 years ago

TI__Mastermind 43610 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 Ansel Song over 4 years ago 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 JCHK over 4 years ago in reply to Ansel Song

TI__Mastermind 43610 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 Ansel Song over 4 years ago in reply to JCHK

TI__Expert 3890 points

Hi JC，

Ok, Thanks for your patient reply.

Best regards,

Ansel

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