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2.3 Electrical Specifications
®
According to Qseven
specifications, µQ7-C72 board needs to be supplied only with an external +5V
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 card
edge fingers (see connector's pinout).
All remaining voltages needed for board's working are generated internally from +5V_RUN power rail.
2.3.1
Power Consumption
µQ7-C72 module, like all Qseven 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.
Anyway, it has been possible to measure power consumption directly on VCC power rail (5VDC)that supplies the board.
The power consumption has been measured in three different configurations of µQ7-C72 module, on the industrial temperature range:
•
Config 1: i.MX 8M Mini Dual, DDR4 SDRAM 2 GB, eMMC 32GB, LVDS, Wi-Fi / BLE, CAN interface
•
Config 2: i.MX 8M Mini Solo, DDR4 SDRAM 1 GB, eMMC 16GB, eDP, CAN interface
•
Config 3: i.MX 8M Mini Quad, DDR4 SDRAM 4 GB, eMMC 64GB, LVDS, Wi-Fi / BLE, CAN interface
Status
Average Value
Idle
1.99W
Boot
2.18W
Video playback
3.28W
Stress Test
3.52W
Battery Backup (VCC_RTC)
Suspend
Soft-Off (VCC_5V_SB)
Q7-C72
Q7-C72 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Authors: A.R - Reviewed by M.B. - Copyright © 2021 SECO S.p.A
Config 1
Peak Value
Average Value
0.398A
2.1W
0.42A
2.4W
0.463A
3.61W
0.722A
2.18W
0.659A
3.92W
0.787A
3.33W
0.705A
4.24W
0.848A
3.58W
power supply.
DC
Config 2
Peak Value
Average Value
0.48A
2.43W
0.486A
2.73W
0.44A
3.12W
0.624A
2.4W
0.66A
3.9W
0.78A
3.55W
0.715A
3.95W
0.791A
4.56W
590nA
N.A.
18mA
Config 3
Peak Value
0.546A
2.82W
0.564A
0.48A
4.09W
0.82A
0.71A
4.36W
0.87A
0.918A
5.02W
1A
15
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