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在做LIN接口的时候发现,通讯时12V供电电源会随信号的发送发生塌陷(△V=100~200mV),刚开始以为是供电电流过小导致,加大供电电流后,仍会出现此现象,由于此前没有做过LIN,不清楚这个现象是否正常,LIN芯片为NXP的TJA1024,麻烦各位大神分析一下,也想知道TI的相关产品会出现这种情况吗?下图黄色为12V供电电源,绿色为信号。