Quectel RG520N-AT Hardware Design page 40

VBAT
R1 0R
R2 0R 0R
R3
NM_0R
D1
⚫
NOTE
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.
RG520N-AT_Hardware_Design
C2
C1 C3
100 μ F
100 nF
100 μ F
100 nF 220 pF
C7
C8 C9
C10
100 μ F 220 pF
100 nF
C17 C18
C16
C15
Figure 10: Star Structure of the Power Supply
C4 C5 C6
6.8 nF 220 pF 68 pF
68 pF 15 pF 9.1 pF 4.7 pF
C14
C11 C12 C13
4.7 pF
68 pF 15 pF 9.1 pF
C21
C19 C20
C22
5G Module Series
VBAT_BB
VBAT_RF1
VBAT_RF2
Module
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