Please see below questions and kindly clarify it for me.
1.The voltage is 0.765v in Vfb, but I found the votagle in fsw is o.5v as LM2842 SPEC page4
Could you please let me know why ther are different? Thanks.
2.inductor selection
the condition is based on vin=42v~4.5v vout=3.3v iout=0.6A fw=550khz
snva377c data recommend 15u for inductor, but webench is 47u
Please kindly let me know which data is correct.