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电流检测,采样电阻检测位置在哪好一些?



看到TI给的电流检测方案是采样电阻放中段,这种方式对比1:放mos管上部与电源连接;2:驱动低端与地连接。更好一些吗?这几种方式的优劣是否可以分析说明呢?