CPC314
C P C 3 1 4 U s e r M a n u a l
14
© 2 0 2 1 F a s t w e l V e r . 0 0 1
1.4 Power Supply
The
device’s power supply should meet the requirements specified in Table 1-1.
The device is powered through the PC/104 and PC/104-plus connectors (if installed). If you need
to supply power from an external source, you can use the additional XP7 power supply connector
(4-pin AMP 4-171826-4 connector).
The power supply should provide the starting current specified in Table 1-1. It is also permitted to
use a power supply with a current limiting mode for at least 3.0 A (excluding any peripherals
connected). When choosing a power supply, the starting current and the current consumption of
expansion modules and other devices connected to the device ports, should be considered.
The device is equipped with an active circuit for protection against short circuit and reverse voltage
supply. There is also a surge protection against overvoltage above 30 V (direct or reverse polarity)
by parallel connection of the TVS protection diode SM6T33CA. In case of a long-term supply of
more than 30V supply voltage (direct or reverse polarity), the TVS protection diode may fail.
The
duration of the voltage supply where the TVS protection diode fails depends on the level of the
supplied voltage and the ambient temperature: at an ambient temperature of 24
°C and an input
voltage level of up to 60V, failure is possible in one second, at the level of up to 120V - in less than
one second.
There are following consumers of the +5 V input power supply:
1) Device (+5V @ 1.5A);
2) External equipment connected to USB ports (4x ports, maximum consumption of each port is
+5V @ 0.5A);
3) External equipment, connection to LPT port (1 x port, maximum consumption of each port is
+5V @ 0.75A);
4) LVDS panel (1 x port, maximum consumption of +3.3V @ 0.75A);
5) External equipment, connection to GPIO port (maximum consumption of +5V @ 0.75A);
6) External equipment, connected to RS-232 ports (2 x ports, maximum consumption of +5V @
0.75A).
The maximum possible load-carrying capacity for the "+5 V" power supply voltage is 5 A. If the 6A
value is exceeded, the active protection of the device will be triggered and the input power will be
disconnected, which will be automatically restored when the load current falls below the 6A limit
value, in which case the device will restart.
Table 1-1 - Requirements for the external power supply
parameters
Version
Power supply
voltage, V
Voltage limiting
values, V
Load current, A
Start-up current, A
CPC314-01
without peripherals
+5V
from +4.75 to +5.25
2.0
3.0
Recommended mating part for additional XP11 power connector (AMP 4-171826-4): AMP 4-
171822-4 and AMP 170263-1 sets of pins (available for order as ACS00038 kit (socket and pins)
or as ACS00038-01 kit (socket , pins and 1m long wires).
