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DRA821U: Power Supply Design Guidance for DRA821U

Part Number: DRA821U
Other Parts Discussed in Thread: TIDEP-01022, TDA4VM, DRA821

Hi

There's a question that customer wants to get feedback from TI.

Please give us some guidance of power design. especially focusing on DRA821u Power Rail side rather than PMIC since they will use two PMICs instead of this selected version.

Regarding PMIC, They firstly  selected PTPS659413FORWERQ1 which has been used for TIDEP-01022 although we also did not recommend them to use the PMIC device which TI does not recommend because it's not released, and it was optimized for TDA4VM. 

Considering this situation, Please give your opinion especially focusing on DRA821 Power Rail Requirement perspective view. 

Today customer asked us to provide delivery date of two PMICs(PTPS659414F4RWERQ1 and P876441A1RQKRQ1 which have been used for DRA821SOM EVM. 

They will redraw schematic based on these two PMICs this week. 

Thanks.