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电机驱动器下桥臂电阻电流采样

Other Parts Discussed in Thread: TIDA-00643, TIDA-00778

在TI 驱动器推荐原理图中有两种三相电机下桥臂三电阻电阻采样电路,一种为电阻接地端接入运放同向输入端,另外一种是电阻接地端接入运放反向输入端。想问一下,这两种设计之间的区别