TMS320F28388D: What is Power Sequence ?

dave choi

Prodigy 225 points

Part Number: TMS320F28388D

Hi, there.

First of all, Thank you for reply.

I'm hardware designer. and I wanna power design schematic using 28388D.

I want to use power sequence like 24v -> 3.3v(vio) -> 1.2v(vcore).

can I use it?

actually I want to know what is power sequence. (ex. 3.3v has to turn up before 1.2v)

Where Can i find power sequence?

Best Regards.

over 3 years ago

+1 Hareesh Janakiraman over 3 years ago

TI__Guru* 95315 points

Power sequencing information is in the datasheet. Please refer page 98 of www.ti.com/lit/SPRSP14.

0 Hareesh Janakiraman over 3 years ago in reply to Hareesh Janakiraman

TI__Guru* 95315 points

Please refer to the following posts for more information:

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1034689/tms320f28388d-power-sequencing

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/906574/tms320f28388d-vddio-and-vdda-voltage-differences-during-rising

0 Hareesh Janakiraman over 3 years ago

TI__Guru* 95315 points

Wanted to bring your attention to an erratum in (www.ti.com/lit/SPRZ439): INTOSC: VDDIO Powered Without VDD Can Cause INTOSC Frequency Drift. This necessitates powering up VDD and VDDIO together.

0 Hareesh Janakiraman over 3 years ago in reply to Hareesh Janakiraman

TI__Guru* 95315 points

Dave,

SPRZ439 applies to 280049, not 28388D. Please disregard my previous post. Apologize for the incorrect reference.

0 dave choi over 3 years ago in reply to Hareesh Janakiraman

Prodigy 225 points

thank you for your reply. I got answer. have a good day.

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TMS320F28388D: What is Power Sequence ?