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TPS65185无输出

Other Parts Discussed in Thread: TPS65185

大家好,我按照demo板设计了TPS65185的电路板,我确定芯片已经工作了,因为vref电压正常,并且我能通过IIC控制使能位使得3.3V电压输出,但是其他电压却没有。通过示波器观察,VN_SW与VB_SWj均无开关的现象(WAKEUP,POWER均拉高了),请问我这可能是什么问题?是不是正常情况下只要上电后WAKEUP与POWER拉高VN_SW与VB_SW就应该工作?附上我的电路图,谢谢。