Hope you are doing good.
We have designed 3.3V VR using LM61495-Q1.
Vin=12V,Vout=3.3V,Iout=5A.
Could you please share us the efficiency results for 600khz, 800khz and 1Mhz.
Attached image FYR of current design
Currently we have designed with 600Khz. Appreciate if your technical team could review the design.