LN920 TLB Hardware User Guide
1VV0301735 Rev. 0
Page 15 of 33
2021-07-15
Not Subject to NDA
Figure 10: EVB Power Supply
The EVB main power connector is PL101/SO101 with an input range of 6-15V.
Normally (i.e. in a typical SW developers setup), the EVB is supplied from the main power
connector, and a DC-DC buck supply with a set point of 3.9V is used to provide the system
VBAT. Thus, the default jumper configuration is as follows: PL103/2-3; PL106/1-2;
PL105/2-3.
PL102 allows an external configurable power supply to feed directly the VBAT input
supply to the LN920, while all the auxiliary peripherals are fed through the main power
connector.
Note: For more detailed information of power supply source
selection, please refer to 1VV0301249 Telit Evaluation Board (EVB)
HW User Guide, Chapter 3.1 Supply Source Selection.
