The power measurement setup consists of three boards:
- Power Profiler Kit (PCA63511)
- nRF52840 DK (PCA10056 v2.0.1)
- nRF52 DK (PCA10040)
Note: In place of the nRF52 DK, you can use another Nordic Development Kit or SEGGER
J-Link.
In addition to these boards, you also need two micro USB cables.
To set up the boards, follow these steps:
- Plug the PPK into the pins on top of the nRF52 DK.
- Connect two jump wires from P16 external DUT on the PPK to P21 external supply on the nRF52840 DK.
- Connect the micro USB cables to the J2 micro USB connectors located on both the nRF52840 DK and nRF52 DK boards. Connect the other end of the cables to the USB hub. This minimizes current leakage.
Figure 1. Hardware configuration
Measurements were taken with the Power Profiler v3.0.0-alpha.0 application. The PPK voltage regulator was set to 3 V.Set the switches to the positions indicated in the following table.
| Board | PCB name | Switch description and position |
|---|---|---|
| PPK | SW1 | Power select ≥ nRF52 DK |
| PPK | SW2 | nRF52840 DK select ≥ External |
| PPK | SW3 | COM ≥ nRF52 DK |
| nRF52840 DK | SW6 | nRF ONLY|DEFAULT ≥ nRF ONLY |
| nRF52840 DK | SW8 | Power ≥ ON |
| nRF52840 DK | SW9 | nRF power source ≥ VDD |
| nRF52840 DK | SW10 | VEXT > nRF ≥ ON |