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TPS 54331 Vsns（5脚）开路，芯片内部会有保护措施吗，输出电压如何？正常工作Vin 12V输入，3.3V输出。
你好，TPS54331有OVP保护，但前提是Vsns经过分压电阻连接到了输出电压。
如果是直接断开Vsns，使Vsns开路，整个电路将处于开环近似直通状态。如果此时负载较大，有可能触发cycle by cycle。
应该尽力避免这种异常。
