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TPS65185异常 启动信号发送后INT和PWRGOOD引脚直接拉低 I2C不工作 发送数据不返回ACK 求解!急!

Other Parts Discussed in Thread: TPS65185, TPS65185EVM

最近在调试TPS65185,上电后引脚输出还是正常,但是将WAKEUP和PWRUP致高之后,INT和PWRGOOD引脚就都变低了 ,而且感觉I2C没有工作,发送slave地址0X68 不返回ACK。 问题原因出在哪里? 求帮忙解决啊

电路图是按照官方的TPS65185EVM画的,也检查了没发现什么问题,VIN送的是3.3V