Active Power Measurements (>1 Ma) - Texas Instruments CC3220-LAUNCHXL User Manual

Hardware Description
2.7.2 Active Power Measurements (>1 mA)
Follow these steps to measure active operation of the CC3220:
1. Remove the VBAT jumper (J19).
2. Solder a 0.1-Ω resistor on a wire, which can be connected to an oscilloscope, as shown in
Or, attach a jumper wire between J19 so that it can be used with a current probe.
3. Measure the voltage across the resistor using an oscilloscope with a differential probe. (For the current
probe, coil the wire around the sensor multiple times for good sensitivity.) An ammeter can also be
used for this measurement, but the results may be erroneous due to the switching nature of the
current.
More information on how to experience the low-power modes and test cases of the CC3220 LaunchPad
kit can be found in the
Power Management
24
CC3220 SimpleLink™ Wi-Fi
Figure 20. Active Power Measurements (>1 mA)
CC3120, CC3220 SimpleLink™ Wi-Fi® Internet-on-a chip™ Networking Subsystem
(see the Power Measurement Guide section).
®
LaunchPad™ Development Kit Hardware
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SWRU463C – February 2017 – Revised March 2020
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Figure 20.