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TPS23754 VC一直处于启动状态呈三角波

Other Parts Discussed in Thread: TPS23754, TPS23754EVM-383

我把TPS23754的APD直接接RTN, PPD直接接VSS,把PD的部分断开,L1断开,L3断开,仍是成三角波,

使用过DC 44V 直接供电,问题依旧,vc仍是三角波。

使用poe供电 ,48v电源一会有,一会无,有电的时候vc仍是三角波。