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AM4372: Can TPS62902 be used as power supply for AM4372?

Kazuya Nakai59
Guru 20130 points
Part Number: AM4372
Other Parts Discussed in Thread: TPS5402, TPS62902, TPS628512

 Hello guys,

 One of my customers is considering using AM4372BZDNA60 for their new products.

 They have a question as the follow. Could you please give me your reply?

 They are planning to design AM4372 power supply part using some 1ch buck DCDC devices

with reference to AM437X_INDUSTRIAL_EVM_3K0008_schematic_REV1_4A.pdf. I attached the schematic file.

 In the file, some TPS5402s are used for AM437x power supplying. 

 TPS5402 datasheet: https://www.tij.co.jp/jp/lit/ds/symlink/tps5402.pdf

 But the device is a little bit old device and it is non synchronous DCDC. So they want to use TPS62902 or TPS628512 instead of TPS5402

because these devices release timing are newer than TPS5402 and these are synchronous DCDC device which contributes higher efficiency.

 TPS62902 datasheet: https://www.tij.co.jp/jp/lit/ds/symlink/tps62902.pdf

(0.9% feedback voltage accuracy)

 TPS628512 datasheet: https://www.tij.co.jp/jp/lit/ds/symlink/tps628512.pdf

(1.0% feedback voltage accuracy)

These devices have Enable pin, Output discharge and adjustable soft start time function.

Also their system input voltage range is 4.75V~5.25V. 

 Their question is the follow.

 Q. Do you think these devices can be used as a power supply circuit for AM4372?

      If your answer is no, could you please give me the reason?

 Your reply would be much appreciated.

 Best regards,

 Kazuya. 

4010.AM437X_INDUSTRIAL_EVM_3K0008_schematic_REV1_4A.pdf

  • 0
    TI__Guru 55375 points

    This question is specific to your customer system design. They must consider power supply requirements of AM437x along with all other components in their system when selecting a power supply solution. The AM437x applications team answering this forum does not have detailed knowledge of the power management devices in question or your customer's system requirements. 

    There is a significant level of coordinated effort between the processor team and power management team when selecting a power solution for one of our evaluation boards. I'm not aware of any plans to review the power management solution in question with AM437x. 

    The power management team may have spent some time evaluating their TPS62902 or TPS628512 devices as a power source for AM437x. You could ask them via the power management E2E forum to see if they have additional information.

    We can answer specific questions related to AM437x, but your customer is ultimately responsible for their system design.

    Regards,
    Paul

  • +1 in reply to peaves
    Guru 20130 points

     Hello Paul,

     Thank you very much for your reply.

     I will ask the power management team via E2E.

     Thank you again and best regards,

     Kazuya.