- Analytical leakage inductance estimation using a corrected 1D field formula — accounts for horizontal fringing at trace edges, vertical flux compression (Rogowski factor), and turns-squared scaling across multilayer PCB winding stacks.
- Validated against Ansys Maxwell 2D FEA across five independent geometries spanning EQ30-class to ER40-class planar cores, with observed accuracy of −3.1% to +5.3% — a working tolerance of ±10%.
- Supports both interleaved and non-interleaved windings — enter any layer stack (P-S, P-S-P-S, P-S-P-S-P-S, and beyond) with per-layer trace width, copper thickness, and insulation gaps.
- Four-sheet transparent structure — Index (scope and license), Inputs (your geometry), Process (every calculation step shown, nothing hidden), and Report (final result, ready to export or print).
- Free, no login required — part of the Circuit Brilliance Magnetics Designer Suite. Built for LLC resonant converters, dual active bridge topologies, and any isolated high-frequency power converter design where leakage inductance needs to be right before the board is fabricated.
These calculators and guidelines give you the numbers. Circuit Brilliance turns those numbers into verified, production-ready PCB designs. Talk to us about your next power electronics project.
