2.3
Electrical specifications
SBC-992-pITX needs to be supplied only with an external 12V
DC
± 10% power supply, minimum 40W for basic functionalities
recommended.
This voltage can be supplied through a standard 6.3mm (internal pin, diameter 2.0 mm) Power Jack.
Internal pin is V
IN
power line.
2.3.1
Power available
When powering SBC-992-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 6 USB ports are used, then the 5V power section would be able to
supply further 4.2A (about 21W) 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 tor 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 (up to 20W, depending on the SOC used and the total memory soldered onboard. 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.
