5 Configuring the Power Profiler Kit
Doc. ID 4425_027 v1.0
Page 17
The power supply is provided either by the PPK on-board regulator or an external power source.
The power supply is applied to the nRF5x DK, which in turn powers the PPK board. This is used to supply
power to the on-board analog measurement circuitry and the on-board regulator with 5 V. This will supply the
custom hardware (DUT) when using the on-board regulator. If an external power source is used to supply the
custom hardware, the USB connection will still be needed to supply the measurement circuitry of the PPK as
well as for communication with the computer.
The following two figures show the configuration for this use case: one with the PPK on-board regulator as the
power source and one with an external power source.
Figure 11: Current measurements on custom hardware with the on-board regulator as the power source
and the nRF5x DK
Figure 12: Current measurements on custom hardware with an external power source and the nRF5x DK
Make sure that the following are configured:
• The PPK board (PCA63511) is connected to the nRF5x DK board as described in
on page 15.
• The USB cable is inserted into the USB connector on the nRF5x DK and connected to a computer running
the PPK desktop application.
• The DUT select (
SW2
) switch is in the "External" position.
