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IWR6843: IWR6843 bootup fail issue

Part Number: IWR6843

Hi

We made our IWR6843 radar board, and we got bootup problem with our boards.

there are about 50% of our IWR6843 can't boot up unless we reset again after power up.

and I found some similar behavior on IWR6843 EVM in  this thread e2e.ti.com/.../755091

is there any relevance between them?

and I found another way to boot up these board, if I heat up the IWR6843 to about 40~50℃ before power up,

it can boot up normally, what reason may make this behavior?

thank you