https://devzone.nordicsemi.com/f/nordic-q-a/71102/vbus-vddh-power-configuration-for-nrf5340Hi, We are working on a board with nrf5340. We are running the nrf5340 in normal voltage mode. So, we have connected the VDD lines to 3.3V. Since we are using USB signals, we have connected VBUS to a 5V supply. We have found a statement in the nrf5340en-USTelligent Community 13Mon, 01 Feb 2021 14:25:25 GMThttps://devzone.nordicsemi.com/thread/292277?ContentTypeID=1Mon, 01 Feb 2021 14:25:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a7f0a74f-848d-4cf2-b3b2-9ed5ba076e26krishnaprabha<p>Thanks Jared for the confirmation!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/292250?ContentTypeID=1Mon, 01 Feb 2021 13:39:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3c8c0fdb-69df-4e20-b482-9ff991f99e83Jared<p>Hi,</p> [quote user=""]<p>From the statement, we think there is no need to connect VBUS to VDDH since our supply is not only from USB power. Please confirm. Attached the image of our schematics design.</p> <p></p>[/quote] <p>&nbsp;Yes, this is correct. VBUS should not be connected to VDDH if you are already supplying the board from another power source. However,&nbsp; VDDH and VDD should be tied together in Normal voltage mode:</p> <p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/pastedimage1612186643616v1.png" alt=" " /></p> <p>And remove the 5V_RF net from VDDH, as the voltage limit in normal mode for VDD is 3.6 V.</p> <p></p> [quote user=""]Also, please confirm that nrf5340 PS v1.0 is the latest version of Product specification [/quote] <p>v1.0 is indeed the latest.</p> <p>regards</p> <p>Jared</p><div style="clear:both;"></div>