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LM5143-Q1: Power management forum

Part Number: LM5143-Q1
Other Parts Discussed in Thread: LM25143-Q1
Our circuit design is as follows:

Test the output waveform of the power supply and find that the output has a step with a duration of 610us.

In addition, we measured the GATE waveforms of the upper MOS and the lower MOS.

We found that the GATE waveform suddenly stopped at the step.

  --GATE waveforms of the upper MOS-- 

  --GATE waveforms of the lower MOS--

Please help explain the reasons and provide solutions.