TPS2388: If i want to change the sense resistor as per the 802.3af standard?

vignesh M6

Part Number: TPS2388

Hi ,

Thanks for your reply.

as per TPS2388 EVM the sense resistor assign for 802.3at standard. If i want to connect the 802.3af device, I need to change sense resistor as per the 802.3af standard?

or the same design can comfortable with 802.3af standard including over current detection?

over 6 years ago

0 Penny Xu over 6 years ago

TI__Genius 15685 points

Hi Vignesh,

IEEE802.3at is backward compatible. IEEE802.3af devices are called Type 1(class 0-3) in IEEE802.3at standard and a class 4(30W) was introduced to to the IEEE802.3at standard. TPS2388 supports both type 1 and type 2 PDs. So you don't need to change the hardware design. Thanks.

Best regards,
Penny

0 vignesh M6 over 6 years ago in reply to Penny Xu

Intellectual 300 points

thank you

Power management

Power management forum

TPS2388: If i want to change the sense resistor as per the 802.3af standard?