LPWA Module Series
BG952A-GL_QuecOpen_Hardware_Design
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3.7. Power Supply
3.7.1. Power Supply Pins
The module provides two VBAT pins for connection with an external power supply. The following table
shows the details of VBAT_BB and VBAT_RF pins and ground pins.
Table 9: Power Supply Pin Definition
For every VBAT transition/re-insertion from 0 V, VBAT slew rate < 25 mV/μs. After the module starts up
normally, in order to ensure full functionality, the minimum supply voltage should be higher than 2.2 V.
3.7.2. Voltage Stability Requirements
The power supply range of the module is from 2.2 V to 4.35 V. Make sure that the input voltage never
drops below 2.2 V.
Figure 3: Power Supply Limits during Burst Transmission
To decrease voltage drop, a bypass capacitor of about 100 µF with low ESR should be used, and a
multi-layer ceramic chip capacitor (MLCC) array should also be reserved due to its low ESR. It is
Pin Name Pin No. Description
Min.
Typ.
Max.
Unit
VBAT_BB
32
Power supply for the module’s
baseband part
2.2
3.3
4.35
V
VBAT_RF
33
Power supply for the module’s RF part
2.2
3.3
4.35
V
GND
3, 31, 48, 50, 54, 55, 58, 59, 61, 62, 67–74, 79–82,
89–91, 100–102
-
-
-
-
NOTE
