EVK-NINA-B3 - User Guide
UBX-17056481 - R03
Product description
Page 8 of 31
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Plugging in a battery to the battery holder BT1
These power supply sources are distributed to the rest of the board as shown in Figure 4.
Figure 4: Block diagram of the power net distribution
1.6.1
Selecting the power configuration jumpers
The EVK-NINA-B3 offers flexible powering options for the NINA-B3 module and the board itself. To
configure this, jumpers are added or removed to pin headers, shorting two of the pins together and
connecting or disconnecting different power nets on the evaluation board. Figure 5 shows the location
of the power configuration jumper headers. The 3V3 net is supplied by the board and will always be
powered as long as any of the power sources shown in Figure 4 are connected. The 3V3 net will not
provide power unless a jumper is added to jumper header J7.
Figure 5: Jumper headers J7 and J22 are used to select power configurations
