7.2 Power supply
7.2.1 General description
The STM32W5MMG module embedded on this STM32WB5MM-DK Discovery kit is always supplied by 3V3
but the board proposes a lot of possibilities to supply the module. The supply source can come from USB or
ARDUINO
®
connectors, or from an external power supply. Figure 7 describes the board power tree. Moreover,
this figure also shows the default state of the jumpers and solder bridges.
Figure 7. STM32WB5MM-DK power tree
7.2.2 7 to 12 V power supply
The STM32WB5MM-DK Discovery kit can be powered with a 7 to 12 V DC power source. There are two
accesses for this type of levels:
• VIN pin of the CN2-8 ARDUINO
®
connector. It is possible to apply until +12 V on this pin or use an
ARDUINO
®
shield which can deliver this type of voltage on the VIN pin.
• Ext input (CN8).
Caution: In this case, paying attention to the configuration of the jumpers and solder bridges is very important. Verify this
configuration on Table 4.
These two sources are connected to a linear low drop voltage regulator (U9). The 5 V output of this regulator is a
potential source of the 5V signal. Refer to Section 7.2.3 for the details.
UM2825
Power supply
UM2825 - Rev 1
page 12/42
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