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TPS6594-Q1: 电源启动不正常

Part Number: TPS6594-Q1
Other Parts Discussed in Thread: TDA4VM

TDA4VM配套的PMIC,刚上电时,TPS659411的LDO1(也就是VDD_SD_DV)电源连续出现1.8V的脉冲,脉宽3.8ms,其他电源和SW使能脚都没有任何动作,请协助分析原因(其他电源测量都没有短路)