TLV62084: Power good detection

Shunsuke Nagata

Part Number: TLV62084

Hi,

My customer check the falling of PG while Vfb is falling. He found PG is falling at Vfb=0.362V which is out of datasheet spec.

He thinks the device may have detection time to falling PG. Attached is report using with TI TLV62084EVM. Could you please support it?

TLV62084_PG detection delay.xlsx

Regards,
Nagata.

over 4 years ago

0 Excel Regidor over 4 years ago

TI__Mastermind 26786 points

Hello Nagata-san,

We will get back to you tomorrow on this issue.

Best regards,

Excel

0 Excel Regidor over 4 years ago in reply to Excel Regidor

TI__Mastermind 26786 points

Hello Nagata-san,

There is a noise filtering network on the PG pin to avoid false triggering due to a sudden output voltage drop during transient load. The RC filter adds up a delay in the PG pin response that is aligned with your observation of 3us (based on VFB_threshold_min).

Best regards,

Excel

0 Excel Regidor over 4 years ago in reply to Excel Regidor

TI__Mastermind 26786 points

Hello Nagata-san,

If you don't have any queries, then I will close this thread. Feel free to post your question for any further question.

Best regards,

Excel

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TLV62084: Power good detection