Power consumption spikes in normal transmissionhttps://devzone.nordicsemi.com/f/nordic-q-a/56223/power-consumption-spikes-in-normal-transmissionI am getting small power spikes but cant seem to pinpoint what is causing them. The smaller spikes in between the transmissions. (The wave is clipped from the top so the actual peak is not known in the graph) I have tried disabling functionalitiesen-USTelligent Community 13Wed, 29 Jan 2020 06:39:33 GMTRE: Power consumption spikes in normal transmissionhttps://devzone.nordicsemi.com/thread/231533?ContentTypeID=1Wed, 29 Jan 2020 06:39:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1c3d3db9-de61-414c-b998-1cb4f6116253Ameer Usman<p>Also one more thing which is important, does the online power profile calculator accommodate this DC/DC refresh mode of charging capacitors in its calculation?</p><div style="clear:both;"></div>RE: Power consumption spikes in normal transmissionhttps://devzone.nordicsemi.com/thread/227881?ContentTypeID=1Tue, 07 Jan 2020 12:41:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d627bad3-e645-499e-8860-74c243988258bjorn-spockeli<p>Link should be fixed now. You should not be worried about this, its just the Automated Power Management system charging up an internal capacitor to maximize the efficiency.&nbsp;</p><div style="clear:both;"></div>RE: Power consumption spikes in normal transmissionhttps://devzone.nordicsemi.com/thread/227846?ContentTypeID=1Tue, 07 Jan 2020 10:26:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f3902471-bdaf-4d2f-8327-794a20037866Ameer Usman<p>Can you provide a fresh link, the provided link is not working.</p> <p>Edit_1: Also should I be worried about this happening or anyway I can avoid it? It happens to me on both LDO and DC/DC.</p><div style="clear:both;"></div>RE: Power consumption spikes in normal transmissionhttps://devzone.nordicsemi.com/thread/227844?ContentTypeID=1Tue, 07 Jan 2020 10:19:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ed419f68-11bb-4266-aed7-a07ff1ea8a4bbjorn-spockeli<p>This is the regulator operating in refresh mode. From the<span>&nbsp;</span><a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/power.html?cp=4_2_0_17_0#topic">spec</a>:</p> <blockquote> <ul> <li>Auto-controlled refresh modes for LDO and DC/DC regulators to maximize efficiency</li> </ul> </blockquote> <p>Both the LDO and DCDC have two modes of operation. Normal mode and refresh mode. Refresh mode is used when the current consumption is low in order to further maximize the efficiency. Refresh mode works by charging up internal caps regularly to provide power to the chip. So the spikes you see is the inrush current to the caps.</p> <p>Whether or not the regulator should be in normal mode or refresh mode is automatically controlled by the chip itself.</p><div style="clear:both;"></div>RE: Power consumption spikes in normal transmissionhttps://devzone.nordicsemi.com/thread/227795?ContentTypeID=1Tue, 07 Jan 2020 06:17:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:04aaf11e-1f5f-4fd1-9442-e629ad170397Ameer Usman<p>Bump.</p><div style="clear:both;"></div>RE: Power consumption spikes in normal transmissionhttps://devzone.nordicsemi.com/thread/227667?ContentTypeID=1Mon, 06 Jan 2020 12:56:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b5511c44-81cd-4259-8e1e-458a0b7e11b3Ameer Usman<p>Chip was mentioned while filling out the support forum but anyway its nRF52811 and a simple BLE beacon is being transmitted.</p><div style="clear:both;"></div>RE: Power consumption spikes in normal transmissionhttps://devzone.nordicsemi.com/thread/227657?ContentTypeID=1Mon, 06 Jan 2020 12:39:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:791cb823-6ffd-4074-ac9f-fce58f547615cbd<p>Hi,</p> <p>You don&#39;t say what chip you are using or what RF technology your transmissions relate to.</p><div style="clear:both;"></div>