TPS23751: If there want to change from class 3 to class4, we just need change Rls from 63.4Ω to 90.9Ω. am i right?

Chen Bogey8

Part Number: TPS23751

Hi Sir

My customer design as attached file.

the customer question that If there want to change from class 3 to class4, we just need change Rls from 63.4Ω to 90.9Ω. am i right?

or we need change other component?

Bogey

TPS23751.docx

over 6 years ago

0 Thomas Amlee over 6 years ago

TI__Genius 9230 points

Hi Chen,

From page 17 of the data sheet:

Also, be sure that your converter is designed for that higher class 4 power level. What is the customer's intended output voltage & current?

Regards,
Tom Amlee
PoE PD Applications Engineer

0 Chen Bogey8 over 6 years ago in reply to Thomas Amlee

Mastermind 9990 points

Hi Tom

What is the customer's intended output voltage & current?
Customer currently use output 12V/1A . in the furture, the output may is 12V/2A.

Bogey

0 Thomas Amlee over 6 years ago in reply to Chen Bogey8

TI__Genius 9230 points

Chen,

Here is a 12V/2.125A reference design featuring TPS23751 that is certified by the Ethernet Alliance to be fully compatible with the PoE standard. It is fully tested & optimized for your power level. Feel free to copy:

www.ti.com/.../PMP11254

Best,
Tom Amlee
PoE PD Apps Engineer

Power management

Power management forum

TPS23751: If there want to change from class 3 to class4, we just need change Rls from 63.4Ω to 90.9Ω. am i right?