NRF9151 DK Supply Current Measurement

[tc531]

We're trying to measure supply current used by the NRF9151 DK but have discovered that the current measurment connector (P22) only includes current supplied to VDD, and that VDD_GPIO isn't measured since it comes from the nPM1300 (U9) which is supplied direct from 5V.  U9 also supplies power to U3A, the debugger, which is not present on our target.  

Is there a way measure the total supply current into the NRF9151, to simulate our target, without including the debugger?

Kind regards

Tim

[Kazi Afroza Sultana]

Hello Tim,

To the best of my knowledge, P22 measures only the current of VDD_nRF and not VDD_GPIO. However, I have been investigating potential methods to implement such a measurement on a custom board. I will come back to you soon.

Thanks.

BR

Kazi