NINA-B50 series - Hardware integration manual
UBX-22021116 - R02
Module integration
Page 11 of 57
C1-Public
It is best practice to include bypass capacitors on the supply rails close to the NINA-B50 series
module. Depending on the design of the power routing on the host system, capacitance might not be
needed.
2.1.5
Power supply configuration
NINA-B50 series modules support two power supply configurations:
•
Power efficient configuration
•
Power switch configuration
☞
A voltage level less than 3 V on
VCC
and
VCC_IO
has negative impact on Tx output power.
☞
The on-module power switch can be disabled when it is not used. This means that the
VOUT_SWITCH
pin can be floating.
2.1.5.1
Power efficient configuration
In Power efficient configuration the following applies:
•
Supply external power to
VCC
•
VCC_IO
supplied from
VCC
•
VDD_LDO_CORE
and
VDD_RF
supplied from the DCDC output
•
VPA supplied from
VDD_RF
Figure 4: Power efficient configuration