Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Reduction of leakage inductance is equivalent to maximizing the coupling
between the windings so (in theory) all of the flux generated from one winding
is coupled to the other winding, or windings.
In general there are some points to note:
1. Leakage inductance energy must be absorbed by snubbers or clamps.
2. Leakage inductance is usually the culprit of cross regulation effects observed on multiple output transformer based systems.
3. You can reduce leakage inductance by using a winding shape that maximizes the window breadth of the chosen transformer.
4. You can also reduce leakage inductance by interleaving the windings. However, when you interleave windings, you will increase the interwinding capacitance.
5. The physical distance between the windings required for high-voltage isolation increases the leakage inductance. One way to reduce this is to use highly insulated wire for the windings.