TPS65916: PCB Placement to BGA and Power Section

DAVID SABALESKY

Prodigy 95 points

Part Number: TPS65916
Other Parts Discussed in Thread: TPS6593-Q1, TPS6594-Q1, AM5716

Tool/software:

Hi Ti Forum,

I have a unique design, and I am inquiring on where I should place a TPS65916 on a moderate dense pcb.

The pcb has three main sections, power on right side, isolated analog top side, and center - left region all digital.

I have a few options but here are two.

1. Place smps within the power section of a pcb, located on right side of the pcb. This adds distance between the smps and BGA DSP.

2. Place smps within a localized power section of the pcb, located on the left side of the pcb. This shortens the distance between the smps and BGA DSP, however it is now located in the digital section.

My thought is that having shorter distance is preferable, as long as sufficient room is around the smps to other digital circuitry to maintain signal integrity.

Please let me know what you think.

Thanks,

David

1 month ago

0 Phil Yi40 1 month ago

TI__Mastermind 39421 points

Hi David,

Yes; your thought is correct! Having shorter distance is preferable since those lower level power rails usually have higher load current which are impacted a lot by the IR drop from the PMIC to the DSP.

BTW, we no longer support new design with a new OTP settings from the GPN TPS65916.

Thanks!

Phil

0 DAVID SABALESKY 1 month ago in reply to Phil Yi40

Prodigy 95 points

Thank you, Phil.

This is a global project and even though we are in prototype stage it is important to get things done right, from the start.

Your response has been helpful. I have been doing design for over 30 years and sometimes there is not enough support.

This is the first time I am using the TPS65916 in a design.

Sincerely,

David

0 Phil Yi40 1 month ago in reply to DAVID SABALESKY

TI__Mastermind 39421 points

Hi David,

As I mentioned that we no longer support new design with a new OTP settings from the GPN TPS65916; I was told we have alternative part is TPS6593-Q1 and TPS6594-Q1 for new design although they're not P2P compatible.

Please help to close this thread if you have no request for the TPS65916.

Thanks!

Phil

0 DAVID SABALESKY 1 month ago in reply to Phil Yi40

Prodigy 95 points

Will the TPS659162RGZR still be available? We are using the PMIC with the AM5716 DSP from TI. I am redesigning a prior PCB and I can make design changes.

Please let me know,

Thanks,

David

0 DAVID SABALESKY 1 month ago in reply to Phil Yi40

Prodigy 95 points

Would you recommend changing the TPS65916 with the TPS6594-Q1?

0 Phil Yi40 1 month ago in reply to DAVID SABALESKY

TI__Mastermind 39421 points

Hi David,

Please close this thread and start a new one with the GPN TPS6594-Q1 in subject and then TI team will assign your thread to the expert of the new GPN.

Thanks!

Phil

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TPS65916: PCB Placement to BGA and Power Section