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近期准备做一款电流源，功率差不多100W左右，按照常规方案的设计 用的是采样电阻和运算放大器，电流精度只达到1%-5% ，达不到要求 要求是0.1%-0.5%。请问TI有比较好的高精度电源方案么，功率小一点没关系，电流5A左右
