Part Number: TPS2372
I have watched the video called TPS2372/3 working with no compliant high power injector and I have few questions:
In order to connect a TI's BT PD to a UPOE PSE, the PD needs to have its first class resistor as a class 4. That means that on a TPS2372 PD the Class Signature resistor A must have a value of 63.4Ω in order to be powered by an UPOE PSE regardless what value is set for Class Signature B?.
Using a POE++ PSE with a TI BT PD doesn't require any specific instruction to be classified and powered up by a POE++ PSE, it should be classified and powered as a BT PSE would do, is this correct?.
If a POE++ PSE of 120w is connected to a TI BT PD Class 8, the PD application will have to make sure that it doesn't exceed 71w at the PD, as the PSE will be able to supply up to 120w violating the IEEE and UL standard, is this statement correct?
POH PSE will just turn on a TI BT PD if it is classified as a class 4. If the TI BT PD is classified Class 5 or above the POH PSE won't turn on the TI BT PD, is this correct?.
Thanks in advance.
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Darwin Fernandez:
Thanks for your answers, they are very useful but I would just like to clarify some of the points.
It is clear now that the value or existence of a resistor in CLSB is irrelevant because a UPOE will just send two class finger as it just look for a class 4 PD. In order to be recognized by an UPOE injector, the TPS2372 needs to have a class 4 resistor in CLSA, is this statement correct?.
In reply to Daniel Campano:
PoE Applications & Marketing Manager
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.