Hello, i'm concerned about LT3966 SW pin max current specs. Basically i've used all 4 channels, 31V 1.8A each, should be good with a 4 layer pcb design and active cooling underneath or is it over-specs?
Hello, i'm concerned about LT3966 SW pin max current specs. Basically i've used all 4 channels, 31V 1.8A each, should be good with a 4 layer pcb design and active cooling underneath or is it over-specs?
Hello Zefram,
this won't work. The switch in a boost regulator does 'see' the input current. To obtain 31V and 1,8A as output load you demand for 56W/channel(!!)
To deliver 56W with 12V input…
Yes, the LT8391 is a part which can deliver the desired power. Maybe the LT8391A is ok as well and saves some space as higher switching frequency allows smaller inductor.
For sure a much bigger design…
