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TPA3112输出无信号

电路图是按照上图画的,供电电压是12V,输入信号是从INP输入,INN与地短接 。上电过后,输出没有波形,将SD与FAULT短接,输出是是以下波形,检测了FAULT引脚,是低电平..   

请问TI专家们,这是不是由于输出短路造成的?如果是该怎么解决啊?