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LM5122: 输入电压低于输出电压,但是BYPASS自动启动

Part Number: LM5122


使用LM5122设计一个24V升压到48V的升压电路时(参考webench设计),输入电压(24V)低于输出电压(48V),但是BYPASS自动启动了(且UVLO引脚为低电平),请问可能造成该问题的原因可能是什么?原理图如下