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tas5731m 总是保护



电路按照demo原理图设计,工作在pbtl模式,能够工作并输出声音,但是声音大一点点就保护了,并且无法恢复。能正常输出的声音非常小,可能只有一两瓦,请问会是什么原因呢,有没有遇到过?供电电压只有20V