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TPS63020: Any suggestion of TPS63020 200Mhz EMI RE Issue

Part Number: TPS63020

We have a series LED lighting products use the TPS63020 for their driver. And I found almost of this series have the same  Radiated Emission issue at around 200Mhz. See below test data:


And use a 4 layer PCB and the layout almost match the datasheet suggest, the circuit and layout as below:


Does anyone can provide any idea on this?