Hi Hedley,
From the waveform you showed, it looks like you connected a PoE++ PSE NOT a IEEE802.3bt standard Type 3 or Type 4 PSE as the PSE doesn't present first long finger classification. Can you please order TPS23880EVM kit (including TPS23880EVM…
Part Number: TPS23881 Other Parts Discussed in Thread: BOOST-PSEMTHR-007 , , The attachment is a circuit diagram drawn by my client. He wants to use 1 port , 4-pair mode. I would like to ask: Need to use Q504, Q505 two sets of Mosfet? Does U1's PIN48…
Hi David,
Our PSE devices have 3 pins for I2C, but it shouldn't matter for applications. If you need isolation between MCU and PSE, you can choose bidirectional isolation with connecting SDAI and SDAO pins together. if you don't want to use bidirectional…
Part Number: TPS23880 Other Parts Discussed in Thread: BOOST-PSEMTHR-007 , USB2ANY Hello
We are starting the development of a new product, which will include a PoE-PSE port.
The TPS23880 looks perfect for us, especially because of its support for…
Hi Xiaowei,
On top of Thomas's comments, I need your clarification on the questions.
1.If don't singlechip control,Can the power achive 90W in 4 pair mode? if need hardware configure? how to configure?
What do you mean by "don't single chip control…
Hi Oleh,
The detection, class, & power up are not compliant, so there is no guarantee your PD will be recognized. I recommend testing your PD with our IEEE802.3bt compliant TPS23880 EVM( TPS23880EVM-008 with BOOST-PSEMTHR-007) & seeing if your PD is…
Hi Liming,
The TPS23880 is live on web: www.ti.com/.../TPS23880 . You can request access to datasheet, EVM user's guide and GUI from there. The EVM module includes TPS23880EVM-008(daughter card, request from us), BOOST-PSEMTHR-007(available on TI store…
Hi Xiaowei,
Please see my answers to your questions. Thanks.
1.If can set 4 channel 2 pair and 2 channel 4 pair,soft set or hardware set?how to set?or only can set 8 channel 2 pair or 4 channel 4 pair.
[Penny]Yes. TPS23880 can be set combination…
Hi Daniel, Your PSE injector supports 802.3at (30W) & non-standard 60W. The PSE did not recognize the PD configured for class 6 because the PSE does not support the IEEE 802.3bt standard. I cannot speak on the specific language used by your PSE manufacturer…
