https://devzone.nordicsemi.com/f/nordic-q-a/60438/power-consumption-using-blinky-example-on-custom-boardHello I am seeing some excessive current consumption (~650uA) when connected and do not know where it is coming from. I am using a custom board with an external 32 MHz crystal for the HFCLK and no crystal for the LFCLK, so I am planning on using the internalen-USTelligent Community 13Wed, 22 Apr 2020 15:05:42 GMThttps://devzone.nordicsemi.com/thread/246093?ContentTypeID=1Wed, 22 Apr 2020 15:05:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:575a66b4-b1f2-4920-ae5f-bff8611d3143BattleDroid<p>Hello Jorgen and thank you for your prompt reply.</p> <p>Turns out the excessive current was due to the PWM peripheral.&nbsp; I was accessing the PWM directly with no driver, but as I read from this other&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/58139/power-consumption-of-pwm">post</a>, the PWM uses the HFCLK and its around 500uA.&nbsp; When I disabled this code, the average current consumption went down to ~60uA by just using the softdevice and establishing a connection to a client (iOS device) using Nordic Blinky App</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/245771?ContentTypeID=1Tue, 21 Apr 2020 08:58:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e1bd0e0a-c8e2-4643-aa8c-b17e4e00ae8dJ&#248;rgen Holmefjord<p>Hi,</p> <p>Which SDK version are you using? Are you only seeing this excessive current consumption on the custom board, or do you also see this on the nRF52 DK?</p> <p>This could be caused by the logger module if you have this enabled. Please check <a href="https://devzone.nordicsemi.com/f/nordic-q-a/59983/current-consumption-difference-between-sdk16-and-sdk15-3/244033#244033">my answer in this thread</a>.</p> <p>Best regards,<br />Jørgen</p><div style="clear:both;"></div>