Maximum number of secondaries on a flyback converter
What do people think should be the maximum number of secondaries on a flyback converter?
This would be for a low power range (sub 20W) with all the secondaries pulling the same amount of power. I am thinking of using six secondary windings (its for a motor drive gate driver power supply).
In the past for various reasons I have used two seperate supplies with 3 secondaries and that has been fine. This time I can overcome the reasons for using two seperate supplies and may be able to use a single supply but I am concerened about cross regulation.
Do you think that the rails can be regulated to within 10% of each other?
Do you know of any suppliers who may have off the shelf carriers/bobbins to take the extra number of windings (looking for a quick turn-around).