This is a Tibbit module — part of the Tibbo Project System that allows you to build your own custom embedded device with only the components you need. Start with a Tibbo Project PCB, add Tibbits like this one, then place the built design into a Tibbo Project Box to complete your product.
Tibbit #23: Isolated PoE power supply with 5V output, shutdown control. Also can be used as generic isolated power supply with 35-60V input range.
This Tibbit is capable of generating up to 1.3A of 5V power from the external PoE power source.
The following table shows the maximum ambient temperature at a given output current:
|Output Current ||Ambient Temp. |
|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 the PoE device, this Tibbit must be installed in the PoE socket on your Tibbo Project Board. On the TPP2 board it will occupy sockets S9 and S11. On the TPP3 board it will occupy sockets S25 and S27. To connect this Tibbit to the Ethernet lines, four jumpers located next to the RJ45 jack will have to be in the PoE (1-2) position.
Tibbit #23 also can be used as a generic isolated power supply. The 35-60V input range makes it ideal for applications relying on 48V power. In case of non-PoE use, 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 LED and one red LED. The green LED is connected to the +5V output and lights up when the voltage is present on this line. This LED's brightness varies depending on the load current. The red LED is connected to the SHUTDOWN line and lights up when the line is LOW (i.e. when the power supply is in shutdown).
- Form: M2T
- Power: 5V; provides 1300mA
- Special Requirements: Requires PoE-compliant power source unless used as a generic power supply, in which case external 35V-60V power source is required
- Mates with: #19, #20, #21 (align with lower portion), #37
- Similar to: #09, #10, #12, #25
M2T Tibbit Modules Overview M2T Tibbits are taller double-width modules occupying two standard M sockets on a Tibbo Project PCB (i.e. TPP2 or TPP3). Their footprint is roughly 14 × 14 "squares" (one "square" is 2.54 × 2.54 mm). The M2T modules are 17.5mm high.
M2 modules have four groups of 6 pins arranged into two rows:
Pins 14-17 and 20-23 are control lines A-H.
Pins 2-5 and 8-11 are I/O lines.
Pins 12 and 24 are the GROUND and +5V power pins.
Pins 1 and 13 are for the optional +15V and -15V voltages needed only by few Tibbits. A special power supply Tibbit (#12) generates ±15V from the main 5V power.
Pins 6, 7, 18 and 19 are unused and should be left unconnected.
Notice that each pin row has a "missing pin" in this middle. This separates a row into two groups of 6 pins.