Prototype current consumption high

[annapalu]

Hi all, i development a FW with a low power and when i measure the power consumption using a nrf connector on evaluation board i have 2 ua, and it's ok. Now i have the some hw, on my prototype when i use a nrf52 and the consumption is very high 400 ua. I use an amperometer serial with a power supply to measure the current consumaption.

Somebody have an idea abou the reason?

Thanks, Anna

[Øyvind Karlsen]

I see, lets pursue a different road first (if we end up needing to review the hardware we also have a closed support portal called mypage).

The current draw you are seeing is very much in line with what you might see if you get an error that causes your device to reboot. Please follow the guidelines in this post to enable DEBUG output.

The most likely cause for this type of error is that the crystals in your design have a different tolerance than the ones in the reference design, in this case they have to be initialized differently. E.g. for a 20ppm crystal you would call: SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, false);