LM5177EVM-HP: LM5177EVM-HP function test unstable

Hi Team,

My customer tested the LM5177EVM-HP and found the following function abnormal.

Enable Pulse Mode function: Under certain input and loading conditions, Duty will fluctuate from high to low, which will cause unstable jitter and affect efficiency.
(Yellow is the Low Side waveform at the Buck end, and purple is the output voltage).

Please help to check if we can modify the EVM.

Vin: 16V
Vout: 16V
Iout: 2~2.8A

Vin : 24V
Vout : 16V
Iout : 1A,2.8~3.6A

Vin : 12V
Vout : 16V
Iout : 1.3~3.3A

1. Iout:2A
   
   
2. Iout:3.3A
   
   
3. Iout:3.4A