https://community.nxp.com/t5/i-MX-Processors/iMXRT1052-eMMC-Power-Supply/m-p/1631844#M204055 <P>Hi,</P><P>We are using 4GB emmc with&nbsp;iMXRT1052.&nbsp;</P><P>We are using step dowm buck converter (3V3) for the controller power supply. In IMXRT1050-EVKB(SCH-30168, PDF: SPF-30168)&nbsp;ref design NXP has used LDO and power switch for SD card supply.&nbsp; &nbsp;is it necessary to use separate LDO(350mA) for the emmc power supply or we can use 3V3 form buck for emmc?</P> Wed, 12 Apr 2023 06:40:14 GMT AkshayPatil 2023-04-12T06:40:14Z https://community.nxp.com/t5/i-MX-Processors/iMXRT1052-eMMC-Power-Supply/m-p/1631844#M204055 <P>Hi,</P><P>We are using 4GB emmc with&nbsp;iMXRT1052.&nbsp;</P><P>We are using step dowm buck converter (3V3) for the controller power supply. In IMXRT1050-EVKB(SCH-30168, PDF: SPF-30168)&nbsp;ref design NXP has used LDO and power switch for SD card supply.&nbsp; &nbsp;is it necessary to use separate LDO(350mA) for the emmc power supply or we can use 3V3 form buck for emmc?</P> Wed, 12 Apr 2023 06:40:14 GMT https://community.nxp.com/t5/i-MX-Processors/iMXRT1052-eMMC-Power-Supply/m-p/1631844#M204055 AkshayPatil 2023-04-12T06:40:14Z https://community.nxp.com/t5/i-MX-Processors/iMXRT1052-eMMC-Power-Supply/m-p/1634330#M204267 <P>Hi&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/185819">@AkshayPatil</a>&nbsp;,</P> <P>&nbsp; When you design the RT1052 hardware, you need to match this power frequency:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="kerryzhou_0-1681706485301.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/219384i69A821D6BD3AD385/image-size/medium?v=v2&amp;px=400" role="button" title="kerryzhou_0-1681706485301.png" alt="kerryzhou_0-1681706485301.png" /></span></P> <P>More details, please refer to the&nbsp;MIMXRT105060HDUG.pdf:</P> <P><A href="https://www.nxp.com/webapp/Download?colCode=MIMXRT105060HDUG&amp;location=null" target="_blank">https://www.nxp.com/webapp/Download?colCode=MIMXRT105060HDUG&amp;location=null</A></P> <P>The power range should match the datasheet:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="kerryzhou_1-1681706595930.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/219385i182CC4EFBC02414F/image-size/medium?v=v2&amp;px=400" role="button" title="kerryzhou_1-1681706595930.png" alt="kerryzhou_1-1681706595930.png" /></span></P> <P>&nbsp;</P> <P>About the emmc power, you can check your used emmc, whether your&nbsp;<SPAN>buck converter power match the emmc power. To the VDD_SNVS_IN power, the buck converter should match above pictures.</SPAN></P> <P>&nbsp;</P> <P><SPAN>Wish it helps you!</SPAN></P> <P><SPAN>Best Regards,</SPAN></P> <P><SPAN>Kerry</SPAN></P> <P>&nbsp;</P> <P>&nbsp;</P> Mon, 17 Apr 2023 04:44:44 GMT https://community.nxp.com/t5/i-MX-Processors/iMXRT1052-eMMC-Power-Supply/m-p/1634330#M204267 kerryzhou 2023-04-17T04:44:44Z