1794-ACN

1794-ACN

1794-ACN电机绕组电流检测放大器简介

四个半桥FET驱动器级中的每一个都包括一个放大器，用于通过监视外部电流检测电阻两端的电压来进行电流检测。检测电压范围为±200 mV，因此可以测量单向或双向电流。电流检测放大器独立于NFET驱动器，因此可用于其他低压测量目的。

每个电流检测放大器都有一个独立的电流检测电源轨 CSPS，其允许电压范围与 VGS 栅极驱动电源相同。电流检测可以在电机电源、电机接地或半桥输出中配置，具体取决于 CSPS 连接。

图2所示为电流检测模块，电源引脚、CSPS和电流检测电阻RCS具有电阻/电容（RC）去耦功能。RTN 引脚既是反相电流检测输入，也是放大器电源接地。

1794-ACN

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