Kinetis MicrocontrollersのトピックPower Distribution of K66F https://community.nxp.com/t5/Kinetis-Microcontrollers/Power-Distribution-of-K66F/m-p/852314#M51224 <HTML><HEAD></HEAD><BODY><P>Power distribution of K66F</P><P></P><P>Hello Team,&nbsp;</P><P></P><P>I have a question regarding the power distribution of K66F schematics. If I power the board through the openSDA usb connector, the P3V3_SDA is powered through U17 which means J18 should shorted by R61. However, I find that both R84 and R61 is not populated on the board. Can you tell me where the power of P3V3_SDA is from if J18 is not connected. Also, I found that SDA_VOUT33 is not connected too.</P><P></P><P>Regards,</P><P>Hao</P></BODY></HTML> Wed, 13 Mar 2019 18:36:10 GMT haozh 2019-03-13T18:36:10Z Power Distribution of K66F https://community.nxp.com/t5/Kinetis-Microcontrollers/Power-Distribution-of-K66F/m-p/852314#M51224 <HTML><HEAD></HEAD><BODY><P>Power distribution of K66F</P><P></P><P>Hello Team,&nbsp;</P><P></P><P>I have a question regarding the power distribution of K66F schematics. If I power the board through the openSDA usb connector, the P3V3_SDA is powered through U17 which means J18 should shorted by R61. However, I find that both R84 and R61 is not populated on the board. Can you tell me where the power of P3V3_SDA is from if J18 is not connected. Also, I found that SDA_VOUT33 is not connected too.</P><P></P><P>Regards,</P><P>Hao</P></BODY></HTML> Wed, 13 Mar 2019 18:36:10 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Power-Distribution-of-K66F/m-p/852314#M51224 haozh 2019-03-13T18:36:10Z Re: Power Distribution of K66F https://community.nxp.com/t5/Kinetis-Microcontrollers/Power-Distribution-of-K66F/m-p/852315#M51225 <HTML><HEAD></HEAD><BODY><P>Hi Hao,</P><P>P3V3_SDA is powered through J7(SDA_VOUT33).</P><P><span class="lia-inline-image-display-wrapper" image-alt="P5V_SDA SDA_VOUT33.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/73656iCDAD93D06E5EE3A2/image-size/large?v=v2&amp;px=999" role="button" title="P5V_SDA SDA_VOUT33.png" alt="P5V_SDA SDA_VOUT33.png" /></span></P><P><span class="lia-inline-image-display-wrapper" image-alt="SDA_VOUT33 P3V3_SDA.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/73660iD5D3E1C2BD7422CA/image-size/large?v=v2&amp;px=999" role="button" title="SDA_VOUT33 P3V3_SDA.png" alt="SDA_VOUT33 P3V3_SDA.png" /></span></P><P></P><P>About the VREGIN and VOUT33, here you can refer:</P><P><span class="lia-inline-image-display-wrapper" image-alt="USB regulator bus supply.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/73844i0FB96BB1DF933884/image-size/large?v=v2&amp;px=999" role="button" title="USB regulator bus supply.png" alt="USB regulator bus supply.png" /></span></P><P>Best Regards,</P><P>Robin</P><P style="min- padding: 0px;">&nbsp;</P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Thu, 14 Mar 2019 02:41:39 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Power-Distribution-of-K66F/m-p/852315#M51225 Robin_Shen 2019-03-14T02:41:39Z Re: Power Distribution of K66F https://community.nxp.com/t5/Kinetis-Microcontrollers/Power-Distribution-of-K66F/m-p/852316#M51226 <HTML><HEAD></HEAD><BODY><P>Thank you very much Robin. It is very helpful. Does any NXP mcu has the USB regulator embedded?</P><P></P><P>Hao</P></BODY></HTML> Thu, 14 Mar 2019 22:09:23 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Power-Distribution-of-K66F/m-p/852316#M51226 haozh 2019-03-14T22:09:23Z Re: Power Distribution of K66F https://community.nxp.com/t5/Kinetis-Microcontrollers/Power-Distribution-of-K66F/m-p/852317#M51227 <HTML><HEAD></HEAD><BODY><P>All the Kinetis MCU with USB module has the USB regulator embedded.</P></BODY></HTML> Fri, 15 Mar 2019 02:44:51 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Power-Distribution-of-K66F/m-p/852317#M51227 Robin_Shen 2019-03-15T02:44:51Z