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33
GE2015
Dev Board User Guide
5. D
ETAILED
F
UNCTIONAL
I
NTRODUCTION OF
GE2015
AND
M
ODULE
This chapter is the detailed functional introduction of GE2015 and module.
5.1.
P
OWER
S
UPPLY
Three ways of power supply are available for GE2015.
1) Connect external 3.8V direct power supply.
2) By 5V power adapter and embedded DC/DC circuit to generate 3.8V power for module.
3) Supply power by USB interface, via embedded DC/DC circuit, USB 5V generates 3.8V power for module.The maximum current provided by USB interface is 500mA.
5.1.1.
D
IRECT
P
OWER
S
UPPLY
Under direct power supply, voltage uploads to module directly, therefore the voltage range must be reasonable for 4G modules. Please make sure the switch of S3 is
turn to the direction of VBAT3V6 as shown in the right figure below.
Note: Please choose the correct voltage to avoid the damage of module.
