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多路LM3410 输出共地问题

Other Parts Discussed in Thread: LM3410

由LM3410做的LED驱动方案,现在由于负载端是多路LED,并且每路LED的负极都是接一起的,所以要求前端电源输出的负极都接一起,但实际多个LM3410组成的驱动电路对应多个负载时,将输出负极接一起,其中一路输出就有问题了,输出电压电流上不去,想请教专家是否想应的解决方案。