DS90UB964-Q1: Power-Down Sequencing

Kenichiro

Part Number: DS90UB964-Q1
Other Parts Discussed in Thread: DS90UB914A-Q1

[ DS90UB964-Q1 ] Power-Down Sequencing

Hi,

The power-up sequencing is spefied as below in the datasheet (SNLS500-JULY 2016).
Are there any requirements of power-down sequencing?

Thanks,
Ken

over 7 years ago

0 Palaniappan Manickam over 7 years ago

TI__Genius 10475 points

Ken,
There is no requirement for power-down sequence, but it is a good idea to pull PDB low before removing the power.

0 Kenichiro over 7 years ago in reply to Palaniappan Manickam

Mastermind 9165 points

Hi Palaniappan,

Thank you for your reply!

This customer has used DS90UB914A-Q1 for their product, however, we did not suggest to pull PDB low before powering down at their design phase.
Is this kind of "more safer" suggestion? or required step?

Thanks,
Ken

0 Palaniappan Manickam over 7 years ago in reply to Kenichiro

TI__Genius 10475 points

Ken,
This is not a requirement but it's a good to follow recommendation.

Because of the holidays, TI E2E™ design support forum responses will be delayed from Dec. 25 through Jan. 2. Thank you for your patience.

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DS90UB964-Q1: Power-Down Sequencing

[ DS90UB964-Q1 ] Power-Down Sequencing