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TPS65311/TPS65310 温度检测问题

TPS65311/TPS65310   包含了温度检测管脚VT。如果VT超过0.5倍VTREF,则系统关机,电源不输出。 参考设计采用了10K NTC和22K电阻进行分压,这样的话只能在低温进行保护,不太符合电源设计的逻辑,电源一般设计成高温保护。  请问这样设计的意义和意图是什么