typical
inductance
flyback
is
magnetics
the
system.
build ?
Hi Adam, leakage is relatively high in flybacks because the windings conduct at different periods, this means that the fields of the 2 windings cannot cancel each other therefore split sandwiching doesn,t help very much unlike in a forward transformer.
Why are they common? because they use fewer parts. If you a making
1000's of supplies the part count is more importamnt that the extra problems in the design phase. For many applications where the load is constant(ish) its not too hard to get a design that is reasonably efficient.Half bridge makes the transformer design much simpler, it's now allmost impossible to wind 1 that wont work, the downside is more power switches but thats not a problem as they are so cheap now. The problem now is the driver transformer/drive configeration. As there are now good halfbridge drivers, made for the motor drive industry, around use
1 of those instead.I gave up making supplies years ago as they are now so cheap, sometimes cheaper than the cost of the parts, why are you bothering?