Dear Teams,
I’m using an nRF9151DK board running a simple firmware (example link: github.com/.../subsys/pm/device_pm).
I connected a Power Profiler Kit II (PPK2) to measure the current consumption, following the instructions from the website: docs.nordicsemi.com/.../ppk/measure_current_source_meter.html.
Here’s what I observed:
In Source Meter Mode:
Hardware connection between Power Profiler Kit II and nRF9151DK:
- VOUT -> P22 VDD_nRF
- GND -> P22 GND
- nrf9151DK connect to PC via USB.
PPK2 provides power to the DK, and I measure around 3.7 mA current draw.
In Ampere Meter Mode:
Hardware connection between Power Profiler Kit II and nRF9151DK :
- VOUT -> P22 VDD_nRF
- VIN ->P22 VDD_5V
- GND -> P22 GND
- nrf9151DK NO USB connected.
- The DK is powered externally via VIN_5V on P20 from nrf9151DK.
In this setup, the measured current suddenly drops to around 800 nA.
That’s a huge difference, and I’m not sure which part of the setup or configuration is causing it.
My questions:
1. Is there something specific that needs to be configured, since there are some differences between nRF9151DK and nRF9160?
1. Could this large difference indicate a wiring or measurement setup issue?
Thanks in advance for any help or suggestions!
