Quectel RG520N-AT - Page 40

5G Module Series
RG520N-AT_Hardware_Design 39 / 109
220 pF
R1
6.8 nF100 nF
100 nF
R2
100 nF
220 pF
68 pF
VBAT_RF1
VBAT_RF2
VBAT_BB
VBAT
C2
C3
C4
C5
C8
C16
C9
C17 C18
0R
0R
Module
100 μF
100 μF
220 pF
C10
68 pF
C11
68 pF
C6
15 pF
C12
9.1 pF
C13
4.7 pF
C14
15 pF
9.1 pF
4.7 pF
C19 C20
C22
C21
R3
0R
NM_0R
100 μF
NM_100
μF
C1
NM_100
μF
C7
NM_100
μF
C15
D1
Figure 10: Star Structure of the Power Supply
⚫
1. Filter capacitors for VBAT_BB include 100 μF, 100 nF, 6.8 nF, 220 pF and 68 pF, and a 100 μF is
reserved.
2. Filter capacitors for VBAT_RF1 and VBAT_RF2 respectively include 100 μF, 100 nF, 220 pF, 68 pF,
15 pF, 9.1 pF and 4.7 pF, and a 100 μF is reserved.
3. R3 needs to be reserved since VBAT_RF2 should be connected to an external VBAT power supply
when Power Class 1.5 (optional) is designed.
NOTE