CompuLab SBC-FITPC2 Instrukcja Użytkownika Pobierz pdf (Strona 9)

3.5. Power System and Power Consumption

The SBC-FitPC2 is designed to work with a large range of power sources. It provides

stable system functionality with input voltage in the range of 7.5V-15V. An unregulated

power supply may be used as long as peaks of supply voltage don’t exceed the input

voltage range.

Power Modes and Power Consumption

There are three typical working modes: Off, Suspend to RAM (STR) and Full Operating

mode.

During Full Operating mode, power consumption may vary depending on both the

software installed on the system and on the CPU / system load.

Current consumption

Measuring conditions: Vin = 12V, no peripheral devices connected

Mode Min Max

Off 70mA 90mA

Suspend to RAM 70mA 100mA

Full Operating 0.45A 0.8A

Backup Power for RTC and CMOS memory

The SBC-FitPC2 implements backup power for RTC and CMOS settings. There is an on-

board rechargeable Li-AL battery, 18mAh. The battery is constantly charged while the

power supply is connected. The RTC will retain system time and CMOS setting for at

least 100 days when the system is unpowered (as long as the system was connected to a

power supply for at least 24 hours prior to power-down).

It’s possible to reset CMOS data to default shorting J4B2 connector pins for several

seconds once the system is unpowered.

Power Supply for USB Devices

The SBC-FitPC2 has 6 USB ports, each one capable of providing up to 500mA. Total

power consumption from USB ports should not exceed 1.5A.

Wake-up Events

The system can wake-up from STR state by the following events:

• On/Off button

• RTC

• USB keyboard/mouse activity

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CompuLab SBC-FITPC2 Instrukcja Użytkownika Strona 9