UG148
Rev. 1, 17-June-2022
Innovative Power
TM
ActiveSwitcher
TM
is a trademark of Qorvo.
3
Hardware Setup
1. Decide which voltage will power VIO_IN. Qorvo recommends powering VIO_IN from the VIN input.
Connect a shorting jumper between J4-1 and J4-2 header to power VIO_IN from the VIN input voltage.
2. Connect a jumper between J2-1 and J2-2 header to power VIN_LDO1 from VIN input voltage.
3. No jumpers are needed for GPIO2/3/4. These are three state GPIOs and can accept a floating input.
Leaving these open sets the following:
a. Buck1=VSET0=2.5V
b. Buck2=VSET0=1.2V
c. Buck3=VSET1=0.81V
d. Buck4=LDO mode set to VSET0=1.8V
e. LDO1=PLSW mode
4. No jumper is needed for GPIO6. GPIO6 has a pullup resistor to VIO which sets LDO2 in LDO mode
to1.8V.
5. Connect a jumper between J20-1 and J20-2 to let GPIO7=L to enable PMIC when input power is applied
in the next step. Remove the GPIO7 jumper if you do not want the supply to automatically startup when
input power is applied.
6. Connect a 3.3V DC input voltage source between J1-1 and J1-2. If the GPIO7 jumper is not installed,
install it to enable the PMIC.
7. Connect an appropriate load to each power supply output.
8. Note that the typical setup is to apply the same 3.3V input voltage to all inputs. Using different input
voltage sources requires careful consideration of startup sequencing.
Figure 3 – Shorting Jumper Settings
