Silicon Laboratories Si3482 SMART PSE-24 KIT User Manual page 4

Si 34 82 S mart PSE- 24 UG
Figure 3. Initial Status Screen
The Si3482 Smart Power 24 kit ships with three powered devices based on the Si3402 with loads for up to
approximately 19.5 W of input power. The loads are arranged as one to three 5  resistors, which draw 5 W each
at the PD output voltage of 5 V. Due to the PD input diode bridge and the dc-to-dc conversion efficiency, each
resistor causes approximately 6.5 W of power to be drawn from the PSE. This means that the PD will draw
approximately 6.5, 13, or 19.5 W from the PSE, depending on the number of load resistors connected.
Step 1: Connect a Class 3 PD with a 6.5 W load (switches off) into Port 1 and a Class 4 PD with a 6.5 W load into
Port 2.
The status window is shown in Figure 4.
Figure 4. Status Screen with Class 3 PD on Port 1 and Class 4 PD on Port 2
4 Rev. 0.2