AnsweredAssumed Answered

IMX6Q overheat issue

Question asked by zhao bing on Oct 21, 2014
Latest reply on Oct 21, 2014 by igorpadykov

Hi,all

       we are developing product with IMX6Q processor MCIMX6Q6AVT10AC & PMIC MMPF0100F0EP.

the attachment is block diagram of my application

When Video input through CSI0 of IMX6Q processor, at the same time  Video is playing through LCD_DI0 of IMX6Q processor ;CPU and PMIC  is heating to much. VDDSOC_IN drop to 1.2V, the video is not play. the input current is always hold 2.37A of 4.2V of PMIC.Meanwhile ,the console may input command. if you reboot or reset the cpu , the roofs  crash.

But when I power down system  power and CPU 's the quantity of heat  drop away, the system  boot up is normal.

But When Video input through CSI0 of IMX6Q processor, at the same time  Video is playing through HDMI of IMX6Q processor , the CPU and PMIC temperature is normal. the video is play normal.

IMX6Q overheat issue appear is random,the probability is 5%.

We measured all of voltage of CPU, only PMIC Voltage output to  SOC is reducing to 1.20V, as a result VDDSOC_CAP and VDDPU_CAP is drop to 1.0V.The others are normal.

What might be the issue , How can it be handled in Software and Hardware ?

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