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IMX287 Power on Fail

Question asked by 许辉勇 许 on Mar 18, 2020
Latest reply on Mar 19, 2020 by 许辉勇 许

     I designed a product  using iMX287 as MCU.Most of the time  the product work normal,sometimes the product does not work with boot fail . The probability is one in dozens.  In this abnormal condition ,the device will continuously ‘died’ until turn off the 5V power and turn on it.  I found the VDDIO drop down to 3.1V, VDDD drop down to 1.05V and VDDA drop down to 1.04V.I don't know why this happened, and I also don't know in which condition this will happen. How can I solve this problem?  Is there some problem with my schematic?  I use 5V only  source .





Best regards.I