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TPS63031: Schematic review

NIBIN S
Intellectual 550 points
Part Number: TPS63031
Dear Team,
 
 
We are using  3.3V buck boost regulator (TPS63031DSKT) in our design and the Schematics is attached.
We request you to review and let us know the feedbacks.
 
Please let us know your feedbacks ASAP.
Thanks & Regards
NIBIN DAS S

  • 0
    TI__Expert 8420 points
    Hi Nibin,

    It seems the datasheet recommendation were followed. The schematic looks good to me.
    What is the input voltage range and the load of the application? Is it battery powered?

    please feel free to send your layout as well for reviewing, this is a more critical part of the design.

    What is the end application ?
  • 0 in reply to Sabrina
    Intellectual 550 points
    Hello,

    We are providing the main power (3.3V) as well as battery power (3.7V typical).
    So the input voltage range comes out to be 4.2V to 3V (battery out).
    The load is 3.3V level.

    We will send the layout file after completing.
    The end application is an IOT device.

    Please let me know your feedbacks.

    Regards,
    Nibin
  • 0 in reply to NIBIN S
    TI__Expert 8420 points
    Hi Nibin,
    This device looks to be the right choice for the application. What I meant by "load " is the output current.. what is the range of the output current?
    If you do not wish to share more information of the application in a public forum, please use private messaging, It would be interesting for me to understand what is the TPS63031 powering.

    Regards,
    Sabrina
  • 0 in reply to Sabrina
    Intellectual 550 points

    Hello Sabrina,

    The output current will be less than 200mA.

    The board file image is attached for reference.

    Please let me know your feedbacks ASAP.

    TOP:

    BOTTOM: 

    Regards,
    Nibin

  • 0 in reply to NIBIN S
    TI__Expert 5425 points
    With what I can see on the pictures I think basically the layout looks ok. I can see outlines of polygons in other parts of your layout, but not in the routing around the TPS63031. I recommend to use polygons for the main power connections to get the lowest impedance possible.