https://devzone.nordicsemi.com/f/nordic-q-a/93796/nrf5340-dk-power-supply-circuitHi Nordic Please explain the use of signals VDD_nRF_SENSE and VSENSE_SW_OUT in the circuit. The board version I bought is PCA10095/0.11.0/2020.50. Thank you.en-USTelligent Community 13Mon, 14 Nov 2022 05:44:09 GMThttps://devzone.nordicsemi.com/thread/395461?ContentTypeID=1Mon, 14 Nov 2022 05:44:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:02062ab8-dd23-4e68-8606-6d24b0abb546Sangho Kim<p>Also, I would like to know more about the operation of the schematic part of &quot;VDD_nRF sense buffer and switch&quot;.</p> <p><img style="max-height:240px;max-width:320px;" alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/image_5F00_001.png" />.</p> <p>Thank you.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/395459?ContentTypeID=1Mon, 14 Nov 2022 05:37:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:664a17da-be58-4d97-b6b9-886cf74a7b99Sangho Kim<p>Hi Bendik</p> <p>Thank you for your reply.</p> <p>Could I ask a little more detail?</p> <p>Then, when external power is applied to P21, are VSENSE_SW_OUT and VDD_nRF_SENSE high or low?</p> <p>Thank you.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/395352?ContentTypeID=1Fri, 11 Nov 2022 14:42:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:511caf78-edeb-46da-9bd8-d7514a41e79dBendik Heiskel<p>Hi,</p> <p>The VDD_nRF_SENSE and VSENSE_SW_OUT signals are used to automatically select the power source. For example when the external power connector P21 is used the the coin cell and the&nbsp; onboard 3V regulator is disconnected.</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Bendik</p><div style="clear:both;"></div>