TPS2372: TPS2372 Dual input redundant PoE

Hi Terry,

PMP20859 is intended for PoE PD redundancy and not power sharing so power sharing is not guaranteed in this TI Design.

I recommend working with your local TI FAE who might help you define a new system level solution for 200W. Note a power sharing application will require a DCDC for each port. As such, I recommend the TPS2373 PD controller to pair with the PWM controller.

Hi Terry,

In order to implement sharing, the system must actively be able to adjust the DCDC to match outputs such that the two channels share power equally. This can be done with two separate DCDC converters. Just to give an example, when we use two current sharing controllers, like in PMP5236 below, the IC senses the currents and adjusts the feedback as necessary on each individual converter so that the output voltages match to share power. This is just one method and there are other solutions that are possible.