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TPA3250: problem of LC filter

Part Number: TPA3250
Other Parts Discussed in Thread: , DXP

Dear all

I has used TPA3250 for PBTL Application. I designed evaluation board follow TPA3250D2EVM.

Component on board is follow all TPA3250D2EVM's BOM.

 The schematic diagram and PCB is as follows.  

TPA3250 's output have a high voltage ripple,nearly 1V. The voltage ripple followed TPA3250 's switch frequency.If I change the frequency resistance the voltage ripple is followed.

It seems LV filter is not effect. I don't know what about TPA3250D2EVM 's effect in this part.

How can I fixed it?

Thank you.