https://www.electronicdesign.com/technologies/power/power-supply/power-electronics-systems/article/21193450/isolated-12-port-power-over-ethernet-pse-controller-chipset
Isolated 12-Port Power over Ethernet PSE Controller Chipset | Electronic Design
Linear Technology Corporation introduces the LTC4270/ LTC4271 isolated 12-port Power Source Equipment (PSE) controller chipset designed for use in IEEE 802.3at...
power over ethernet12 portpse controllerisolated