UMTS/HSPA+/LTE Standard Module Series
Mini PCIe-C EVB User Guide
Mini_PCIe-C_EVB_User_Guide 16 / 39
4
EVB Interface Application
This chapter describes the following Mini PCIe-C EVB components application:
Power supply
USB interface
Audio interfaces
(U)SIM interface
UART interface
It also provides information about the switch, button, status indicators and test points to facilitate the use
of the Mini PCIe-C EVB.
4.1. Power Supply (J201/J302)
The Mini PCIe-C EVB can be powered by an external power adapter through connecting with the power
jack (J201) or USB connector (J302) on the EVB. The power adapter is designed to be connected to a
step-down converter (U201), which can convert the supplied voltage into proper voltage (VBAT) for the
Mini PCIe-C/-D and EP200F modules.
The following two figures show the simplified power supply block diagram and the EVB power supply
interface.
J201
S201
Power jack
Power
switch
U201
1.8V
3.0V
U202
U203
USB interface
J302
VBAT
Power supply for
Mini PCIe-C/-D
module
St ep-down convert er
TPS54319RTER
3.3V
R207
J202
Figure 7: EVB Power Supply Block Diagram