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imx6qplus can't work at 0 centigrade

Question asked by gaoweilin on Dec 18, 2016
Latest reply on Dec 19, 2016 by igorpadykov

I choosed IMX6DQPAEC  in my design and it work well at normal temperature,but when the air temperature falled to 0 centigrade,the board failed  to boot,the debug uart has no message when the power is on.I measured all regulator outputs of PMIC, found that the vgen4_3v0 which connected to VDDHIGH_IN dropped to about 0.96 V,but  acturally it should be 3V according to datasheet.Who can tell me why?