https://devzone.nordicsemi.com/f/nordic-q-a/11437/nrf51822-terrible-range-with-dcdc-enabledHi all, Hope someone can help me. We are using the NRF51822 on MDBT40-256V3 module. The IC used is revision V3. We&#39;re not using Bluetooth but our own proprietary protocol. Everything works ok, except for DCDC. We’re using 3,6V battery for VDD. Ween-USTelligent Community 13Mon, 25 Jan 2016 14:13:10 GMThttps://devzone.nordicsemi.com/thread/43136?ContentTypeID=1Mon, 25 Jan 2016 14:13:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d7fe3ed6-6168-4b44-94d1-1427d2a2c6efKenneth<p>This case is now in parallel handled by our RF experts through MyPage, feel free to share findings if you believe they can be useful for others once complete.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/43138?ContentTypeID=1Fri, 22 Jan 2016 11:05:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1c6bcda8-db85-43ec-8de5-be6fe1ed9b75rbolijn<p>Yes we are using the DCDC by only writing the DCDCEN register during initialization. I will also upload the layout in MyPage</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/43135?ContentTypeID=1Fri, 22 Jan 2016 10:50:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b6e4b6af-119f-47fe-b21d-0c20617c7b40rbolijn<p>I added the snapshots</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/43137?ContentTypeID=1Thu, 21 Jan 2016 17:05:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ba01892f-07b4-4877-9e8a-1fb09739dc98Kenneth<p>There were a change in how to use the DCDC between rev2 and rev3 of the nRF51-series: <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.pdf.panpcn/pcn_092_v1.2.pdf">infocenter.nordicsemi.com/.../pcn_092_v1.2.pdf</a></p> <p>On rev3 you only enable the DCDC by writing to DCDCEN register in POWER peripheral during init, and then the DCDC will be automatically used by the radio. No need to disable or enable like on previous revision. Are you sure you are using it this way?</p> <p>We might help you by taking a look at the schematic and layout, but then we should do this through MyPage on www.nordicsemi.com.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/43134?ContentTypeID=1Wed, 20 Jan 2016 20:14:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:aa37d975-3806-41f5-8e98-3e90ce7b489bDave_couling<p>1.25V is below the 1.8V Vmin spec.</p> <p>This sounds like it could be a Desense issue, from noise generated from switching. Can you post any snapshots of your layout gerbers?</p><div style="clear:both;"></div>