Part Number: PMP20859 Other Parts Discussed in Thread: LM5020 , TPS3808 Hi TI,
Is the reference design of PMP20859 able to output Vout with only Aux 48Vdc input and with disconnected PoE input? The reason asking this is because Vout would be 0V initially…
There is no priority for the PoE inputs with this design. The port with the higher voltage will supply the power. If the voltage on each port is close to being the same, there may be some sharing of power.
Part Number: PMP20859 Other Parts Discussed in Thread: TPS2372 We have successfully implemented a dual PoE & external 48V input based on the PMP20859 reference circuit, which works fine. External 48V in only, works. PoE swapping over works no glitches…
Part Number: PMP20859 I require a dual PoE input design, but no external 48V input, so do I just delete the components ringed below. Looks like I won't need the 48V input connector, 48V sense control and 2 off circuits to pull (PoE) PG low if external…
Part Number: PMP20859 Hi team,
I found that we have PMP20885, PMP20940 those two reference designs, could you please s h are the PMP20885, PMP20940 design documents to customer for reference?
Looking forward to your reply.
Part Number: PMP20859 Other Parts Discussed in Thread: TPS2372 Hi,
I would like to ask why R35 is configured to 27.4k ohms? This contradicts the TPS2372 datasheet which recommends 24.9k ohms.
Part Number: PMP20859 Other Parts Discussed in Thread: TPS3808 , TPS2372 , TPS2373 Hi Experts,
I have a few questions regarding this design:
Why is there a need for the UVLO of the converter to be pulled low by Q9? I thought that unless the inrush phase…
Part Number: TPS2373 Other Parts Discussed in Thread: TPS2378 , TPS2372 , PMP20859
Below redundant PD is for .bt, if I want to implement .at version just change the TPS2372 to TPS2378, right?
Or you have better total solution or reference design…