Ideal diode LTC4355 possible Latch up ?

Hi everyone,

I designed a dc dc converter with the LT8390 in 12V out 47V 4.5 Amper, is part of a UPS,
to switch on the main power supply and dc-dc converter I used an ideal diode LTC4355 
and 2 mosfets IRF3710,

I have the following problem (occurs for load currents above 1.5 - 2 amperes)

is it a latch-up? How can I solve the problem?

Thanks in advance

SPAXIO