10
Positioning and Power Consumption Test
UC-08-C43 EN R1.0
Figure 4-3 Testing DCDC_IN
current
8.
Compute the power consumption, which is equal to
External Voltage × (VDDIO
current
+ DCDC_IN
current
).
Similarly, if you do not have the one to two cable, you can measure the current
VDDIO
current
and DCDC_IN
current
respectively.
4.2.2
Power Consumption in V_BACK Mode
To test the power consumption of V_BACK, do the following steps:
1.
Remove the jumper caps of VDDIO and DCDC_IN.
2.
Use two test wires, one end of which inserted to the VDDIO jumper, and the other
end connected to the multimeter.
3.
Do the steps 4 to 7 in section 4.2.1.1 again.
4.
Read the current values of V_BACK
current
.
5.
Compute the power consumption, which is equal to 3.3V × V_BACK
current
.
