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DRV8251: DRV8251驱动电流调整

Part Number: DRV8251

我参考TI的推荐电路,想用调整VREF的方式来调整输出电流,但实际调试的过程中调整VREF(0~3.3v),VOUT1到VOUT2的电流没有变化,总是200mA左右.