TPA3111D1: TPA3111D1PWPR芯片低温试验后无输出，测量FAULT引脚电压为0V

TPA3111D1PWPR芯片低温试验-20℃，输出无声音，测试2脚FAULT电压值为0V，需要重新上电或SD脚短接地一次后，才可以恢复输出，请问是什么原因导致输出关断，哪种输出关断是不可恢复的？手册中的Duty_cycle是指哪个信号，是输入信号吗？DC Detect 检测到哪种错误是不会自恢复？

期待回复，谢谢

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