TPS23881: use TPS23881 to support 120W non-standard PoE

Ben Kuo

Part Number: TPS23881

Dear team,

I would like to use TPS23881 to support non-standard PoE, and port power up to 120W.

Could you let me know how to modified device register to support this application?

Did we only need to change Pcut(datasheet 9.6.2.25)? or we have other registers need to change to support 120W application.

Regards,

Ben

over 1 year ago

0 Brandon Beader over 1 year ago

TI__Genius 12265 points

Hi Ben,

Thank you for reaching out to TI on E2E design support.

To access port power up to 120W you only need to change the Pcut. Pcut is automatically set to 90W when turning on but must be manually adjusted to implement high power. This is done with the 2Ah and 2Bh registers set to FFh.

Please refer to the following link for more information to aid design for beyond BT High Power solutions.

https://www.ti.com/lit/an/slva986/slva986.pdf?ts=1656594266166&ref_url=https%253A%252F%252Fwww.google.com%252F

Very Respectfully,

Brandon Beader

TI PoE PME

Power management

Power management forum

TPS23881: use TPS23881 to support 120W non-standard PoE