#23, M2T: Isolated PoE Power Supply, 5V Output

A yellow M2T Tibbit.

Function: Isolated PoE power supply with 5V output, shutdown control. Can also be used as generic isolated power supply with 35-60V input range.

Form factor: M2T

Category: Power supply module

Special needs: [POE] (unless used as a generic power supply)

Power requirements: PoE-compliant power source (unless used as a generic power supply, in which case an external 35-60V power source is required)

Mates with:  #19, #20, #21 (aligns with the lower portion of this Tibbit), #37

See also: #09, #10, #12, #25, #33


This Tibbit can generate up to 1.3A of 5V power from an external PoE power source.

The following table details the maximum ambient temperature at a given output current:

Output current

Ambient Temperature

up to 1.3A

up to 50°C

up to 1.0A

up to 60°C

up to 0.5A

up to 80°C

As a PoE device, Tibbit #23 must be installed in the POE socket. On the TPP2 and TPP2(G2), Tibbit #23 occupies sockets S9 and S11. On the TPP3 and TPP3(G2), this module occupies sockets S25 and S27. To connect Tibbit #23 to the Ethernet lines, four jumpers located next to the RJ45 jack must be in the "PoE (1-2)" position.

Tibbit #23 can also be used as a generic isolated power supply. The 35-60V input range makes it ideal for applications relying on 48V power. In non-PoE use cases, the external power is applied (in any polarity) via line pairs IO5/IO6 or IO7/IO8.

The module has a dedicated shutdown (–SDWN) line. Pull the line LOW to disable this Tibbit.


There is one green and one red LED. The green LED is connected to the +5V output and lights up when voltage is present on this line. This LED's brightness varies depending on the load current. The red LED is connected to the –SDWN line and lights up when the line is LOW (i.e., when the power supply is shut down).

#23, M2T: Isolated PoE Power Supply, 5V Output