LM5072 LM5073 802.3at app note

Below is text from the users guide for this part.
It references an application note I can not find.
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This LM5072 based 5V out 25W POE+ PD power supply isfully compliant with IEEE 802.3at standard. This eval board
converts 48 Vdc to 5 Vdc. It can deliver up to 25W power as specified by the IEEE 802.3at standard. It has a 2 event detection
circuit which can identify the PSE as either Type one or Type two.

( See National Semiconductor Application note “Fully Compliant IEEE 802.3at Interface Using the LM5072/LM5073” for details )