https://devzone.nordicsemi.com/f/nordic-q-a/108362/vdd-vddh-and-dcch-mistakeDear community, Somes mistake have been done on a production. DCCH pin have pin connected at VDD instead of of VDDH. I&#39;m in &quot;Normal Voltage mode, DC/DC REG1 enabled&quot; with code configuration : NRF_POWER-&gt;DCDCEN = 1; I know that is wrong.en-USTelligent Community 13Thu, 14 Mar 2024 15:20:18 GMThttps://devzone.nordicsemi.com/thread/473940?ContentTypeID=1Thu, 14 Mar 2024 15:20:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bd1bcaad-7167-42c6-a8f9-f2d520fd3d0cketiljo<p>This looks correct!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/473911?ContentTypeID=1Thu, 14 Mar 2024 14:25:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:47048598-3edc-4689-9d28-8527fbe30209jo!<p>Hi !&nbsp;<br />Thanks for your reply, time to update my schematics !<br />So, from the datasheet AND forum, my new schematics :<br /><br /></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/Capture-d_2700E900_cran-2024_2D00_03_2D00_14-152350.png" />&nbsp;&nbsp;<br /><img style="max-height:240px;max-width:320px;" alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/Capture-d_2700E900_cran-2024_2D00_03_2D00_14-1524121.png" /><br /><br />do you see somethings wrong ?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/469210?ContentTypeID=1Fri, 16 Feb 2024 11:51:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:702f5aaf-597b-4cf0-a81c-2592d4b5fc56ketiljo<p>The DCCH pin should be in a floating starte when the DCDC is not used. And when VDDH is not connected, REG0 will be disconnected. While it&#39;s out of spec, it should work but you need to fix it.&nbsp;</p> <p>REG1 is not related to this.&nbsp;</p><div style="clear:both;"></div>