TPS2384: 802.bt 15w

GARETH OU

Guru 11415 points

Part Number: TPS2384
Other Parts Discussed in Thread: TPS23882

My customer needs 802.bt 15w 8port
VIN 12V to 54V, is there anything suitable for the product recommendation?
Thank you

over 4 years ago

0 Darwin Fernandez over 4 years ago

TI__Mastermind 41770 points

Hi Gareth,

Can you confirm that the 12V spec is the DCDC input for the 50V output and NOT the PSE pass voltage on the CAT5e cable?

To be compliant to the standard, the PSE voltage range is in the 50-57V range. If you're looking to be compliant I recommend the TPS23882. You can order the TPS23882EVM and use the GUI to set each of the ports to 15W.

If looking for a 12V to 50V power supply, I recommend looking at our TI design library in the link below. Thanks!

0 GARETH OU over 4 years ago in reply to Darwin Fernandez

Guru 11415 points

Hi Darwin

Yes , 12V DC-DC to 54V (boost isolation)

Is there a complete schematic of 12V boost 54V isolation and TPS23882?

Thank you very much

0 Darwin Fernandez over 4 years ago in reply to GARETH OU

TI__Mastermind 41770 points

Hi Gareth,

The TPS23882EVM is really the best circuit to copy. You can copy the same circuit design for each port.

For the DCDC, the solution I can find on TI Design library is shown below.

Power management

Power management forum

TPS2384: 802.bt 15w