Hi Shinichi,
Unfortunately, TPS23861 doesn't support 24V input as the port can be turned on when the voltage is >30V. If customer requires 24V input, TPS23841 is the only option for them. How much current is flowing through the cable? Will auto mode be…
HI Thomas,
In their HMI and CPU board, there are 24V, 5V, 3.3V in power part. They don't have 44V-57V.
Do you have some reference designs which provide to customers? If we have total solutions of PSE--TPS23841 with PD--TPS23753A, it will…
Part Number: TPS2379 Other Parts Discussed in Thread: TPS23841 , TPS23754 , TPS23861
Does TPS2379(PD) and TPS23841(PSE) can support non-standard POE as block diagram in attached file ? If cannot, which TI can support ? Thank you.
Hello Penny, hello Thomas.
Thank you for the reply. I found this device pretty for my project, because:
- need powering and monitoring for our Class0-PD in development
- if system approved, maximum 40 devices needed for monitoring production, it is not…
Hi Darwin,
What is bothering me is that if 48V rail is needed for the PoE power, then what's the use of operating TPS23841 at 24V rail when it works on single supply? Does TPS23841 have an in built step-up dc-dc converter that can step-up 24V to 48V?…
Other Parts Discussed in Thread: TPS23841 , TPS2384 Hello All,
I'm looking into doing a Bob Smith termination for a Power over Ethernet (POE) PSE. The TI app note ( http://www.ti.com/lit/pdf/slva233 ) shows the following termination:
But all of TI's…
TPS23841 can sink up to I CUT = 0.615A (typical) per port which translates to ~2.58W device power dissipation for 4 ports (including bias and quiescent dissipation). Theta JA is specified at 21.47C/W so you would see a 2.58W x 21.47C/W = 55.4C temperature…
Please refer to the following E2E thread which discusses the use of TPS2384 (and TPS23841) in a single port application. PMP5480 which is embedded in the thread shows the configuration of TPS2384 in single port applications (auto mode).
http://e2e.ti…
