Electrical Specifications; Power Rails Meanings; Power Consumption - Seco COMe-C55-CT6 User Manual

2.3 Electrical Specifications

®
According to COM Express specifications, the COMe-C55-CT6 board needs to be supplied only with an external +12V
5 Volts standby voltage needs to be supplied for working in ATX mode.
For Real Time Clock working and CMOS memory data retention, it is also needed a backup battery voltage. All these voltages are supplied directly through COM
Express Connectors CN6-AB and CN6-CD.
All remaining voltages needed for board
2.3.1

Power Rails meanings

In all the tables contained in this manual, Power rails are named with the following meaning:
_RUN: Switched voltages, i.e. power rails that are active only when the board is in ACPI
_ALW: Always-on voltages, i.e. power rails that are active both in ACPI
_SUS: unswitched ACPI S3 voltages, i.e. power rails that are active both in ACPI
2.3.2

Power Consumption

COMe-C55-CT6 module, like all COM Express modules, needs a carrier board for its normal working. All connections with the external world come through this
carrier board, which provide also the required voltage to the board, deriving it from its power supply source.
Therefore, power consumptions of the board are measured using a CCOMe-965 Carrier board on +12V_RUN power rail that supplies the board. For this reason, the
values indicated in the table below are real power consumptions of the board, and are independent from those of the peripherals connected to the Carrier Board.
Power consumption in Suspend and Soft-Off States have been measured on +5V_ALW power rail. RTC power consumption has been measured on carrier board
backup battery when the system is not powered (VCC_RTC power rail). For the measurements, it has been used a DC Power Analyzer Keysight N6700B.
The current consumptions, written in the table of next page, have been measured using the following setup:
•
O.S. Windows 10
•
32GB DDR4 (2 x 16GB SO-DIMM DDR4 2400MHz modules, p/n APACER 75.DA4GJ.G010B)
•
USB mouse and keyboard connected
•
HDMI display connected.
COMe-C55-CT6
COMe-C55-CT6 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.B. - Reviewed by L.V. Copyright © 2020 SECO S.p.A.
'
s working are generated internally from +12V
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s S0 (Working), S3 (Standby) and S5 (Soft Off) state. Examples: +5V_ALW, +3.3V_ALW.
power rail.
DC
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s S0 (Working) state. Examples: +3.3V_RUN, +5V_RUN.
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s S0 (Working) and S3 (Standby) state. Examples: +1.5V_SUS.
power supply.
DC
'
s
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