Monitor The Power Supply; Turn On And Off Scenarios; Turn On Module Using The Pwrkey Pin - Quectel BG95 Series Hardware Design

LPWA Module Series
BG95 Hardware Design
a single voltage source and can be expanded to two sub paths with star structure. The width of VBAT_BB
trace should be no less than 0.5mm, and the width of VBAT_RF trace should be no less than 2mm. In
principle, the longer the VBAT trace is, the wider it will be.
In addition, in order to get a stable power source, it is suggested to use a TVS with low leakage current
and suitable reverse stand-off voltage, and also it is recommended to place it as close to the VBAT pins as
possible. The following figure shows the star structure of the power supply.
VBAT
VBAT_RF
VBAT_BB
+
+
C5
C2 C3 C4 C6 C7 C8
C 1
D1
TVS
100nF 10pF
33pF 100uF
100uF 100nF 33pF 10pF
Module
Figure 5: Star Structure of the Power Supply

3.5.3. Monitor the Power Supply

AT+CBC* command can be used to monitor the VBAT_BB voltage value. For more details, please refer
to document [2].
NOTE
"*" means under development.

3.6. Turn on and off Scenarios

3.6.1. Turn on Module Using the PWRKEY Pin

The following table shows the pin definition of PWRKEY.
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