TPS2372: some question about PD solution, TPS2372

Hi Zhaoyong, 

Please see the comments:

1. Yes, The TPS2372 contains all of the features needed to implement a single interface IEEE802.3bt Type-3 ( TPS2372-3) and Type-4 ( TPS2372-4) powered device (PD). TPS2372-4 and TPS2372-3 support high power applications up to 90 W and 60 W respectively. Assuming 100-meter CAT5 cable, this translates into 71.3 W and 51 W at PD input.

2. Yes, TPS2372-4 support high power applications up to 90 W, TPS2372 can support PoH as well. For PoH design detail, I would suggest the training video starts from 06:35.
   • "TPS2372/3 working with noncompliant high power PSEs (UPoE, PoE++ and PoH)": https://training.ti.com/tps23723-working-noncompliant-high-power-pses-upoe-poe-and-poh

3. The main difference between single-signature and dual-signature is the number of PDs. There are 2 PDs on the load site for dual-signature. For more detail about single/dual signature, please refer to the training video from 03:25.  
   • "IEEE802.3bt TI PSE New Features": https://training.ti.com/ieee8023bt-ti-pse-new-features

Please kindly let me know if the answer helps, thanks a lot for choosing TI PoE. 

Best Regards, 

Sean Liao

Hi Zhaoyong, 

If the answer helps, please kindly press "Resolve" button to let us know the question closed. 

Thanks a lot!

BR, 

Sean Liao