TPS65919-Q1: to adjust power-up / down sequence

K.Yaita

Part Number: TPS65919-Q1

Hi Team,

My customer wants to adjust power-up / down sequence of TPS65919-Q1 for specific application.
I believe it isn't possible to adjust power-up / down sequence for customer use because the power-sequence controller uses OTP memory (factory-programmed).
Is my understanding correct?

I would like to confirm just in case.

Best Regards,
Yaita / Japan disty

over 7 years ago

0 Raheem over 7 years ago

TI__Mastermind 21590 points

Hello Yaita,
I've assigned this to the appropriate engineer who will respond soon with an answer to your question.
Regards,
Raheem

0 Karl Wallinger over 7 years ago

TI__Genius 16410 points

Hello Yaita-san,

Yes, you are correct. The power-up and power-down sequences are only stored in OTP memory, and therefore cannot be changed. The closest you can get to changing the power-down sequence is to disable rails by I2C in the order that you want them to shut off. But this cannot be done for the power-up sequence, since the device needs to be enabled before it can accept I2C commands.

Regards,
Karl

0 K.Yaita over 7 years ago in reply to Karl Wallinger

Guru 29720 points

Hi Karl-san,

Thank yo for your kind support.

Is there possibility that TI will prepare TPS65919-Q1 that OTP memory is customized depending on business volume?
If so, I will have a talk with my customer and TIJ local sales.

Best Regards,
Yaita

0 Karl Wallinger over 7 years ago in reply to K.Yaita

TI__Genius 16410 points

Hi Yaita-san,

Yes, we can support customized OTP programming depending on the business case. Your local TI sales support can help with that.

Regards,
Karl

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TPS65919-Q1: to adjust power-up / down sequence