Current Consumption Information; Power Supply Control - Connect Tech COM Express 2 User Manual

Connect Tech COM Express Type 2 Carrier Board - User Manual

Current Consumption information

The majority of the current consumption is from the COM Express module, the PCI-104 and PC104 Express cards.
Other sources of current consumption are USB, SATA HDD drives, etc.
The following table can be used to help estimate the total current consumption of you COM Express carrier solution.
When building up your COM Express solution you should use your vendor provided datasheets to help create an
more precise power estimate.
Module
CCG0xx Carrier
COM Express
Module
mSATA Flash Drive
USB Ports
SATA HDD
LVDS Panel
LVDS Backlight
Ethernet
PC/104 Plus or
Express Card

Power Supply Control

Function Power Supply Control
P8
Location
4 Position Connector, NOTE! Rev B units will feature
Type
a JST B4B-XH-AM(LF)(SN)(P)
Pinout
Position
1
2
3
4
These signals can be used with +12V power supplies that provide Power Good and can utilize a Power Good signal.
Power Good is an open drain signal and is pulled up to +5V on the COM Express carrier.
14
Current (typical)
200mA
1000-4000mA
130-250mA
100mA (keyboard)
500mA
700mA
230mA
420mA
40mA
See vendor documentation
Description
No Connect, +5VSB in (Rev B)
PS_ON Output from Carrier
Power Button input to COM Ex
module
Ground
Power Rail
+12V
+12V
+3.3V
+5V
+12V
+5V
+3.3V
+5V
+12V
+12V, +5V or +3.3V rail.
Revision 0.03