TQ TQMaRZG2x, User Manual

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User's Manual l TQMaRZG2x UM 0100 l © 2021, TQ-Systems GmbH Page 28
3.5 Power
3.5.1 TQMaRZG2x supply
The TQMaRZG2x only requires a single supply voltage of 5 V ±5 % (4.75 V to 5.25 V).
All other voltages required for the correct operation of the TQMaRZG2x are generated on the TQMaRZG2x.
Supply rails that require an input voltage of 1.8 V or 3.3 V can be powered from an external source, or by a voltage provided by
the TQMaRZG2x ; see Table 35. The following table shows all supply voltages for the TQMaRZG2x.
Table 32: TQMaRZG2x supply inputs
Voltage Level I
max
Usage
V_5V_IN 5 V See 3.5.2 TQMaRZG2x supply
VDDQVA_SD0 1.8 V or 3.3 V 35 mA Supply for IO rail SD0
VDDQVA_SD1 1.8 V or 3.3 V 35 mA Supply for IO rail SD1
VDDQVA_SD2 1.8 V or 3.3 V 35 mA Supply for IO rail SD2
VDDQVA_SD3 1.8 V or 3.3 V 35 mA Supply for IO rail SD3
V_BAT 0.9 V to 3.6 V See 3.3.3 Supply for TQMaRZG2x RTC
VBUS0 Typ. 5 V <1 mA
Serves to detect the USB VBUS voltage.
Supplied by VBUS switched by the USB host.
VBUS must be connected to 30 kΩ in series on carrier board.
USB3HS0_VBUS Typ. 5 V <1 mA
3.5.2 Power consumption TQMaRZG2x
The power consumption of the TQMaRZG2x strongly depends on the application, the mode of operation and the operating
system. For this reason the given values have to be seen as approximate values.
The following table shows the current consumption of the three TQMaRZG2x variants at a supply voltage of 5 V and an ambient
temperature of +25 °C.
Table 33: TQMaRZG2x current consumption
Mode of operation TQMaRZG2H TQMaRZG2M TQMaRZG2N Remark
STOP-Mode 16 mA 21 mA 22 mA STOP-Mode by Board Controller
Reset 23 mA 29 mA 29 mA TQMARZG_RST_IN# = LOW
U-Boot idle 622 mA 591 mA 339 mA –
Linux idle 552 mA 497 mA 340 mA –
Linux 100 % load 1260 mA 953 mA 555 mA Stress test
1
1: stressapptest -W -s 60 -M 1024 -m 4 -C 4 -i 4 | stress-ng --cpu-load 100 --cpu 4 --timeout 31536000