LN920 TLB Hardware User Guide
1VV0301735 Rev. 0
Page 17 of 33
2021-07-15
Not Subject to NDA
2.6.1.1.
Jumper Setting for Bypass Mode
PL106/2-3
Figure 13: Jumper Setting of Telit EVB for Bypass Mode
2.6.2.
6-15V Setting
The EVB main power connector is PL101/SO101, with an input range of 6-15V DC.
It is usually connected to a DC power supply or power adapter.
6-15V DC input power is connected to DC-DC converter block and step down to 3.9V to
supply the LN920 module.
The output voltage of DC-DC converter is designed as 3.9V and it does not meet the LN920
M.2 card power supply specification.
Therefore, it is necessary to proceed with a modificatio to supply 3.3V power through the
process described below (2.6.2.1 Guidelines of ECO for 3.3V Output).
2.6.2.1.
Guidelines of ECO for 3.3V Output of DC-DC Converter
•
Step 1
When using a supply 6-15V or 12V adapter, please change the header as
highlighted in
red
in the image below (PL106/1-2)
PL101: Power Supply Connector
Power source by adjustable power supply: 6-15V
