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TPA3111D1无法工作

Other Parts Discussed in Thread: TPA3111D1

附件中是我设计的TPA3111D1原理图,测试pin1和pin2引脚电平一直为低电平,芯片进入保护,无音频输出。断开LEFT和RIGHT的输入信号后,pin1和pin2电平变为高电平,有哪位大神知道是什么原因造成的,谢谢