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请问TPA3251D2EVM这个板子,为什么供电最少需要18V

Other Parts Discussed in Thread: TPA3251, LM5122

tpa3251这个芯片可以12V供电工作,LM5010ASD这个芯片的输入工作电压也是在8V-75V之间。请问为什么TPA3251D2EVM这个板子的工作电压就要18V以上了?

谢谢谢谢谢谢!