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TPS650864: ZYNQMP芯片损坏

Part Number: TPS650864


设计采用TPS650864给ZYNQMP供电,其中,PL的VCCO为SWA1供电,设计电压3.3V。调试时,连续两块板子使用一段时间后出现PL的HDIO损坏,始终为高。示波器测量为3.3V,纹波偶尔超过3.4V,时间不超过10us。看ZYNQMP手册发现VCCO最大耐压为3.4V,请问设计是否有问题?