2.3
Electrical specifications
SBC-C41-pITX needs to be supplied only with an external 12V
DC
± 5% power supply. It is possible to supply the module by using two different power
connectors (factory alternatives)
The first possible power connector is type Molex Mini-Fit connector, type MOLEX p/n 39-28-1023 or
equivalent.
The pin-out is indicated in the table here on the left, and the mating connector is MOLEX p/n 39-01-
2020 or equivalent with crimp terminals series 5556/44476.
As an alternative, the VIN voltage can be supplied through a standard 5.7mm (internal pin, diameter 2.0 mm)
Power Jack CN2.
Internal pin is VIN power line.
2.3.1
Power available
When powering SBC-C41-pITX with a PSU with characteristics greater or equal to the one described at beginning of previous paragraph, please consider well what
is the typical scenario for using the board (i.e., which peripherals will be connected)
Internal power section is able to supply a maximum of 8A@5V for external devices supplied directly by the module (i.e. USB devices, optionally SSD or SATA disks,
display).
Consider that each USB 2.0 port requires 500mA, and USB 3.0 ports need 0.9A each, so if all 5 USB ports are used, then the 5V power section would be able to
supply further 4.7A (about 24W) to other peripherals, like SATA Disk and/or LVDS display. Anyway, if all this current is needed by external peripherals, a 40W PSU
cannot supply further power for internal circuitry of the board.
Since all the power must be supplied by an external PSU only, please balance well the typical final configuration, considering both the power consumption of the
board itself (in paragraph 2.3.2 are detailed current consumption for possible different SOCs) and the power consumption of external devices.
This way it is possible to calculate preliminarily if a 40W PSU can be sufficient for system needing or if most powerful PSUs are required.
Mini-Fit Power Connector CN1
Pin Signal
1
GND
2
V
IN
