Vbat - Quectel EC2 Series Design Manualline

3.1.2. VBAT

 Place 100 μF, 100 nF, 33 pF and 10 pF capacitors for both VBAT_BB and VBAT_RF respectively.
The smaller the capacitance is, the closer the compositors are to the two VBAT pins.

The maximum current consumption of VBAT_RF is 1.8 A and its trace width is recommended to be
no less than 2 mm. The maximum current consumption of VABT_BB is 0.8 A and its trace width is
recommended to be no less than 1 mm. Moreover, please pay attention to the capability and quantity
of vias in the traces. The GND vias of the filter capacitors for VBAT should be drilled down to the
nearest main ground.
≥ 2 mm
≥ 2 mm
≥ 1 mm
≥ 1 mm
Figure 5: Traces of VBAT with Capacitors (TE-A 4th Layer)
EC2x&EG2x-G_Series_PCB_Design_Guideline
GND
GND
VBAT_RF
VBAT_RF
Vias
Vias
VBAT_BB
VBAT_BB
Figure 4: VBAT Traces (TE-A 1st Layer)
Vias
GND
GND
EC2x&EG2x-G Series PCB Design Guideline
GND
GND
Capacitors
LTE Standard Module Series
GND
GND
GND
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