I’m working on reducing power consumption on the nRF54L15 and aiming for an idle current of around 3 µA, as shown in Nordic’s documentation.
With the SDK v3.0.1 hello_world project, I consistently measure an average current of approximately 5.5 µA. Despite disabling all possible peripherals, the current level remains the same.
I have included the project file for reference.
Additionally, any recommended Zephyr settings or example configurations would be very helpful.
Hello,
For comparison you might try the system off example first.
But in general check out the DK description if you haven't already:
https://docs.nordicsemi.com/bundle/ug_nrf54l15_dk/page/UG/nRF54L15_DK/measurements/current_measurements.html
Also yse the board configurator to disable leds, uarts and set the board to 3V (instead of 1.8V), e.g.:
Make sure to set the PPK 2 in source mode.
Kenneth
Hi Kenneth,
I observed that the power consumption drops to around 1.5 µA when using the system_off example, but that example completely powers down the system and causes a full restart when an interrupt occurs.
In my case, I need the device to enter a system-on idle state, so that execution continues from where it stopped after waking up—without a restart.
According to the documentation, this system-on idle mode should achieve around 3 µA. Please correct me if I’m misunderstanding anything.
Hi Kenneth,
I observed that the power consumption drops to around 1.5 µA when using the system_off example, but that example completely powers down the system and causes a full restart when an interrupt occurs.
In my case, I need the device to enter a system-on idle state, so that execution continues from where it stopped after waking up—without a restart.
According to the documentation, this system-on idle mode should achieve around 3 µA. Please correct me if I’m misunderstanding anything.
