Other Parts Discussed in Thread: PMP20859, TPS2372
The customer's PD application will have two POE input(back side and bottom side), the application condition : The POE input will source by different PSE device. But they just use one input port to provide power and another port is Lan port. The customer would like to design, the user can chose one POE as input(one provide power another port be LAN port). so the application are using two TPS2378.
Because the two input may be different voltage (48V and 52V), could the customer refer the PMP20859 and how to mortify the circuit that can make just enable one TPS2378. Or any reference design can provide?
1. If back side RJ45 is as POE input and bottom side RJ45 is as LAN port.
2. If back side RJ45 is as LAN port and bottom side RJ45 is as POE input.