This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

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,找了两篇文章TIDA-00778和TIDA-00643,分别对应运放同向输入和反向输入两种情况。两种设计不仅限于文章中涉及的两款芯片,在器件选型的时候有遇到多次同样的设计,是不是和采样时间和采样点有关