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TPA3116D2声音自动减小

Other Parts Discussed in Thread: TPA3116D2

TPA3116D2,采用PBTL模式,工作电压DC24V,输出端接升压变压器,当定压功放使用;小功率20W输出测试,另外功率加大60W测试,同样工作几分钟就出现功放增益自动减小(即声音自动小下来),请帮忙看看问题出在哪里,附原理图,感谢!

tpa3116d2.pdf