• Resolved

TPS65988： Change PDO1 voltage output

Prodigy 240 points
user6461981

Replies: 3

Views: 46

Part Number: TPS65988


I need to make the voltage output of PDO1 5.25V, how do I need to operate it?


I use TPS65988 and TPS55288 to connect with I2C1. The PDO1 setting of TPS65988 is 5V/3A, but I need PDO1 to actually output 5.25V. What should I do?

Prodigy 240 points
user6461981
  • Expert 5040 points
    Hari Patel1

    Hello,

    To comply with the USB PD specification, the PD controller must provide the fixed 5V/3A by default, if it is configured as a source. However, since you would like to source 5.25V/3A, you can simply add in another PDO and use this Source PDO2 to provide the 5.25V.

    Thank you,

    Hari

  • Prodigy 240 points
    user6461981

    In reply to Hari Patel1:

    Hi Hari,

    Thanks for your reply,

    but I want to know if there is a way to make PDO1 display 5V, but actually output 5.25V.

    thank you

  • Expert 5040 points
    Hari Patel1

    In reply to user6461981:

    Hello,

    Unfortunately, no you cannot output more than the advertised voltage for normal operation.

    Thank you,

    Hari


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