I need to redesign an old PFC for some higher input current and I have a problem with the space on my PCB. Now I use a ferrite core with a big air gap and 300mT maximum flux.
High saturation flux ferrite for PFC Choke
For the new choke, in order to have the desired inductance with the same core and bobbin size I will need a ferrite with 400mT capability. I saw that Feroxcube has a develop 3C92 material that can work at 400mT 100°C without a high drop in permeability value but unfortunately the are not so many core sizes available .Ideally I will like to find ETD34 size but a similar size with slightly diferitte shape will also fit in my board space. Did some one experimented other similar ferrite materials with high saturation flux density?