nRF54L15DK System_OFF and System_ON with RAM retained current measurement

[Muhammed]

As per nRF54L15 datasheet, system_off current at 3V VDD is 0.8uA. I am getting negative average current when i measuring System_OFF current consumption of nRF54L15 using nRF54L15DK board (VDD=3V) as below.

But when configure vdd=1.8V using nRF board configurator i'm getting ~0.9uA. 

Application : ncs\v3.1.1\zephyr\samples\boards\nordic\system_off

modified the application by adding CONFIG_APP_USE_RETAINED_MEM=n  in prj.conf .

i have followed the current measurement application notes.

Could you please help me with this? is there any configuration i missed?

[Simonr]

Hi

What kind of device are you using to measure the current consumption exactly, and what accuracy does it support. I think you might need to configure the board to run at 3V with the board configurator app to get useful measurements when the board is in system OFF mode. 

Please set the VDD rail to 3V and see if you get better results that way. 

Also, what version of the nRF54L15 DK are you working on? What does the sticker say on the three lines below PCA10156?

Best regards,

Simon

[Muhammed]

Hi
I'm using Power Debugger to measure the current, that can measure 100nA to 100mA.

The above current measurement at VDD=3V is taken by configuring the board using board configurator app. getting ~0.9uA at 1.8V and getting negative current at 3V.

nRF54L15DK Device details showing in the board as below:
0.9.2
2025.7

Thanks,
Muhammed