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TPA3255使用PBTL接法，VDD、GVDD由tps54560从pvdd转换成12v供电reset信号由tps3802提供，上电后测量DVDD3.3v、AVDD7.8V、VBG1.2v但是没有任何输出，请问一下这个电路有什么问题呢 谢谢
您好，
请参考数据手册“Figure 31.”检查电路。
TPA3255 315-W Stereo, 600-W Mono PurePath Ultra-HD Analog-Input datasheet (Rev. A)
Ultra-HD Analog-Input datasheet (Rev. A)
TPA3255使用PBTL接法，VDD、GVDD由tps54560从pvdd转换成12v供电reset信号由tps3802提供，上电后测量DVDD3.3v、AVDD7.8V、VBG1.2v但是没有任何输出，请问一下这个电路有什么问题呢 谢谢