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TPS63020: TPS63020 became extremally hot

Part Number: TPS63020

I am investigation product field failure and found that one of two TPS63020 devices became extremally hot (+119 C) after 1.5 years of field operation. I checked all related components and they are seems OK and there are no short connections. Picture of thermal image and copy of schematics are attached. There are no hit sinks on those devices.