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INA226: 传感器在工作时电流变化时死机

Part Number: INA226


该传感器在此电路中电流发生较大波动时会发生死机现象,SCL恒置高,SDA恒置低且重新初始化无法恢复,必须重新上电才能恢复正常工作

PCB中前后均有470uF电容,测试中怀疑由电流变化导致采样电阻上的电压尖峰导致,将共模滤波电容更换为1uF并在采样电阻两侧增加对地的1uF和0.1uF滤波电容并无改善

故障具体视频如下