Silicon Laboratories Si825x User Manual page 3

3. Si8250 Multi Phase POL Target Board Stand-Alone Operation
The POL target board comes preloaded with firmware algorithms, and is designed to provide a 3.3 V output with up
to 40 Amps of output current.
To operate the target board as a stand-alone power supply, perform the following steps:
1. Connect a V power supply to the V
IN
supply on.
2. Connect a load to the V
recommended. For higher output currents, an electronic load simulator can be used.
3. Turn the V supply on. The converter will start up and provide 3.3 V at V
IN
Power Supply
(10–15 V, 10 A)
Si825x Multi-Phase POL-RD
terminals (J1 and J2) as shown in Figure 2. Do not yet turn the power
IN
terminals (J3 and J4) as shown in Figure 2. For initial testing, a 2 , 15 W resistor is
OUT
VIN
+
–
Figure 2. Board Power Configuration
OUT
Top View
Rev. 0.2
.
VOUT
+
Electronic Load
Simulator or
Equivalent
(3.3 V, 40 A max)
–
3