Ublox IRIS-W10 Series, User Manual

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EVK-IRIS-W10 - User guide
UBX-23007837 - R03 Hardware description Page 12 of 43
C1-Public
3.1.1 Powering the board
After applying power to one of the sources described in Table 1 , slide SW6 shown in Figure 6
to the ON position to power-on the EVK.
The input voltage VBUS-OUT is extended to:
•
3.3 V switching regulator input ( U11 )
•
3.3 V linear regulator input ( U20 )
•
USB 2.0 On-The-Go (OTG) circuit
•
VBUS-OUT (5 V) connections on pin headers
•
mikroBUS slots 5 V positions
There are two options for the maximum current for the EVK, either:
•
Populate the 2.4 A power switch U6 (MP5075GTF) and disconnect R124, as shown in
Figure 7.
•
Limit the maximum current to 600 mA by populating R124 with a 1206 0R 2A resistor and
disconnecting U6.
Figure 7: EVK-IRIS-W10 maximum current options
3.1.1.1
3.3 V switching regulator
(U11)
The EVB is populated with a fixed 3.3 V, 3 A switching regulator (TPS62132RGTR), as shown
in
Figure 8 . LED D10 (green) indicates the presence of the 3.3 V output from the regulator U11 .
Figure 8: Switching regulator (U11)