Quectel FG50V Hardware Design page 23

Table 4: Definition of Power Supply and GND Pins
Pin Name Pin No.
VDD_CORE_VL 1, 2, 47
VDD_CORE_VM 45
VDD_CORE_VH 46
VDD_IO 43
VDD_RF 19, 20, 63
GND 6, 24, 26, 27, 29, 30, 31, 32, 34, 44, 51, 66, 67, 69, 70, 74, 75, 85–108
Among them, VDD_CORE_VL, VDD_CORE_VM, VDD_CORE_VH, and VDD_IO can be powered by
either Quectel RG50xQ series or discrete power supply chips while VDD_RF can be powered by a
discrete power supply chip. The following figures show the two power designs. For more details, see
document [2].
e.g. DC 5 V input
RG50xQ
FG50V_Hardware_Design
Description
0.95 V power supply for the
module's main part
1.35 V power supply for the
module's main part
1.95 V power supply for the
module's main part
1.8 V power supply for the
module's I/O pins
3.85 V power supply for the
module's RF part
Typ. 3.85 V output
DC-DC
VDD_WIFI_VL
VDD_WIFI_VM
VDD_WIFI_VH
VDD_EXT
Figure 3: Power Reference Design with RG50xQ Series
Wi-Fi&BT Module Series
FG50V Hardware Design
Min. Typ.
0.9 0.95
1.28 1.35
1.85 1.95
1.7 1.8
3.3 3.85
VDD_RF
VDD_CORE_VL
VDD_CORE_VM
FG50V
VDD_CORE_VH
VDD_IO
Max. Unit
1.0 V
1.42 V
2.05 V
1.9 V
4.25 V
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