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TPS54240-Q1 output variation vs temperature

Other Parts Discussed in Thread: TPS54240-Q1

Team,

One of my customer, Mando is developing Radar system with TPS54240-Q1.

During the chamber test, they found the output voltage change at temperature, -40C.

Have you seen those case such as Vout variation at -40C? 

Vout=3.5 at room temp

Vout=3.15V -> Vout=3.6V (few secs later after turn-on at -40C)

sorry for the lack of information, i will update you very soon with details. just want to check if there is similar case. 

Regards,

Ian Lee