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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
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开路负载检测的目的是检测连接至电子控制单元(ECU)的线束中的连接器接触不良或断线等状况。
开路负载检测主要分为两类:
适用于高端应用的大多数东芝IPD使用上述第1类,通过输出晶体管关闭时监控输出端子电压来检测开路负载。
此电路中开路负载检测电阻值的计算方法如下:
当负载电阻超过设定值时,诊断输出端被驱动为高电平以发出开路负载信号(即断线)。