ElecDesigner
Member level 5
Hi,
The application is:
Push-Pull topology, running at 1MHz.
Output approx. 5W, 14V.
Input 24V
Controller: LT3999
In this circumstance I need to design a custom transformer with dual primaries and dual secondaries. Reading between the lines of what LT have done with their demo board, minimizing leakage inductance seams important, I guess to avoid having to use lots of lossy snubbers.
Given this, what is the best layer stack, of the typical makup of a push-pull transformer, assuming that 1 wining - 1 layer, eg I don't think its practical to have more than one layer per winding.
Do I need to put the primaries on top of each other, of do I do a pri, sec, pri, sec split. Would it make any difference?
The application is:
Push-Pull topology, running at 1MHz.
Output approx. 5W, 14V.
Input 24V
Controller: LT3999
In this circumstance I need to design a custom transformer with dual primaries and dual secondaries. Reading between the lines of what LT have done with their demo board, minimizing leakage inductance seams important, I guess to avoid having to use lots of lossy snubbers.
Given this, what is the best layer stack, of the typical makup of a push-pull transformer, assuming that 1 wining - 1 layer, eg I don't think its practical to have more than one layer per winding.
Do I need to put the primaries on top of each other, of do I do a pri, sec, pri, sec split. Would it make any difference?