Hi,
In my application,I will use LM5122 as a boost controller. Vin<=12V, Vout=24V, 5A, My schematic as below.
When I tested my product, I find my efficiency is about 83%, and when it have the load, the High side MOSFET Q2 is very hot. So I dected the LO and HO pin waveform as below picture. I found the LO is normal and the HO has a drop from 32V to 28V. My mosfet Vgs is about 8V. So I think my MOSFET is not fully open and the efficiency is lower.
