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TPS650830 使用疑問

Other Parts Discussed in Thread: TPS650830

这边Intel Amber Lake-Y平台的项目,使用TPS650830时遇到power保护的现象,附上我们的线路,帮check哪里有问题。
1.按所附线路power on时,只有+V3.3A_DSW,+V1.8A,+V5A能起来,但都是起来一下就没了。
2.将+V3.3A_DSW与+V3.3A短接,所有power都能正常起来,但BIOS跑一段后所有的电都保护掉了,包括+V3.3A_DSW。
3.步骤2恢复,断开pin ENA连接V5A_PG的电阻R9625,+V3.3A_DSW,+V1.8A,+V5A都能起来,但V3P3A_EN一直为low,从+V3.3A以后(包括+V3.3A)的power都不能起来。
4.步骤2,3恢复,pin VSA改接+V3.3A_DSW时,+V3.3A_DSW,+V1.8A,+V5A,+V3.3A,+V1.00A,RSMRST_PWRGD都能起来,但按power button不发SLP_S4_N,SLP_S3_N。

B403-V01-20181119.pdf