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TPS5450: 过热导致电源供电异常

Part Number: TPS5450

TPS5450应用在24V转5V给LED显示屏供电。屏幕开启最大亮度。点10几分钟之后,TPS5450输出异常。因为屏比较热,DCDC也发热,现在考虑与温度相关。请教一下我如何排查,如何解决?