What are the key considerations in designing magnetics for power converters?

Magnetics design considers: core material (ferrite for high frequency, powder iron for DC bias, nanocrystalline for high efficiency), core size (power handling capability, losses, temperature rise), air gap (for energy storage in inductors, prevent saturation), winding design (skin and proximity effects at high frequency, interleavingto reduce leakage), and thermal management. Design equations balance core loss, copper loss, and size. Flux density must stay below saturation (0.3-0.5T for ferrite). Verification includes inductance measurement and thermal testing.