TPS65219: TPS6521902 and TPS6521908 Schematic review

Santosh Vema

Part Number: TPS65219

Hello,

I was wondering if I can get our schematic reviewed? The schematic is based of AM62x SK EVM. I have two variants, one with TPS6521902 and other with TPS6521908. We are using PMIC to power AM6234 processor. Also, we are planning to use LPDDR4 with AM6234 processor.

TPS6521902(R5 is not populated)

TPS6521908 TPS6521908 tps6521902(R9 and C18 are not populated)

12 months ago

0 Brenda Diaz 11 months ago

TI__Mastermind 20256 points

Hi,

Thanks for reaching out! Could you share the schematic in a searchable PDF?

Thanks,

Brenda

0 Santosh Vema 11 months ago in reply to Brenda Diaz

Prodigy 195 points

Sure, here you go.ngeeproc.pdf

+1 Brenda Diaz 11 months ago in reply to Santosh Vema

TI__Mastermind 20256 points

Hi,

Thanks for sharing the schematic in PDF. I have noted my feedback below. We recommend getting the full schematic reviewed by the Sitara processor team so they can provide feedback on the connections to the AM62. Let us know if there are any questions.

TPS6521902 and TPS6521908 both have Buck3 configured to output 1.1V (LPDDR4) but the schematic says "VDD_1V2".

VLDO4 must have an output capacitor, even when not used in the application. This rail is enabled by default on the TPS6521902/08 NVM configuration and requires a 2.2uF output capacitor.

It is recommended to pull-up the EN/PB/VSENSE pin to "VCC_3V3_MAIN" (PMIC supply) instead of "VCC_3V3_SYS".

Thanks,

Brenda

0 Santosh Vema 11 months ago in reply to Brenda Diaz

Prodigy 195 points

Thanks Brenda for all the suggestions and corrections. Once I have the complete schematic, I will get it reviewed by AM62 team.

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TPS65219: TPS6521902 and TPS6521908 Schematic review