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ADP5054 4Channel all overcurrent protection

Hi,

  I want to use the ADP5054 for Xinlinx Ultrascale K ,According to the ADP5054 SPEC,CH1&CH2 current output can up to 10A ,the CH3&CH4 up to 2.5A.

But  when adjust the load up to 6A,the CH1&CH2 efficiency drop to 58%. And when adjust the load up to 0.8A,the CH3&CH4 can not output the voltage , like get into the

overcurrent protection mode.

 Please help me check the schematic and How to slove the Problem?

My design refers to the ADP5054-EVALZ,and the BOM is same as the EVALZ, the schematic as follows.

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