LPWA Module Series
BG950A-GL&BG951A-GL_Hardware_Design
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3.6. Power Supply
3.6.1. Power Supply Pins
The module provides two VBAT pins dedicated to the connection with the external power supply.
One VBAT_RF pin for RF part.
One VBAT_BB pin for baseband part.
Table 8: Pin Definition of Power Supply
3.6.2. Power Supply Monitoring
AT+CBC* can monitor the VBAT_BB voltage value. For more details, see document [3].
3.6.3. Requirements for Voltage Stability
The power supply range of the module is from 2.2 V to 4.5 V. Make sure the input voltage will never drop
below 2.2 V.
Power supply for the module’s
baseband part
Power supply for the module’s RF part
3, 31, 48, 50, 54, 55, 58, 59, 61, 62, 67–74, 79–82,
89–91, 100–102
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-function mode, the minimum power supply voltage should be higher
than 2.2 V.