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LM5176EVM-HP: LM5176 EVM test problem

Part Number: LM5176EVM-HP
Other Parts Discussed in Thread: LM5176

Hi Team,

LM5176 EVM test problem.
1. Vin12~13V to 12Vout will have high gate blanching, current about 5A.

2. Vin under 11V measures Q5 as shown in the figure. high-gate does not switch on . At this moment, Q5 will heat up and the voltage will flow from the body diode.

3. Vin 13 above measurement Q5 is shown as high-gate switch on.

Is this blanching normal phenomenon? How to improve? thanks