Core and material catalogue
Common ferrite and powder cores with their material data, so the loss and saturation numbers come from the core you will actually buy.
Inductors and transformers, designed in one place.
Choose a core from the catalogue, set the current and frequency, and see losses, saturation margin and temperature before you order samples.
What does the Magnetics Designer do?
AirInduct Sim's Magnetics Designer sizes power inductors and transformers from a core and material catalogue. You enter the electrical requirement (inductance or turns ratio, current, frequency, waveform) and it returns the winding, core loss, AC winding loss, leakage inductance, saturation margin and the resulting temperature rise. A design explorer sweeps cores and turns so you can compare candidates side by side, and the finished part can be dropped into the Circuits module as a model with its real losses rather than a bare inductance.
Features
Winding and core loss
Core loss from the material model and AC winding loss including skin and proximity effects, reported separately so you know which one to attack.
Leakage, saturation, temperature
Leakage inductance for transformers, peak flux against saturation, and a thermal estimate of the temperature rise.
Design explorer
Sweep cores, turns and gaps and compare the candidates on loss, size and margin.
Limits
Thermal results are estimates from a lumped model; confirm the hottest designs on the bench. Material data covers the catalogue materials only.
Every module ships with reference cases that run in our CI. See validation for how results are checked.
Related modules
Circuits & Power Electronics
Browser circuit simulator for power electronics: DC, AC, transient, Bode and exact switching steady state in one solve. Opens LTspice .asc schematics. Runs on Mac, Linux, Windows and Chromebooks.
Converter Designer
From input and output specs to candidate converter topologies, real parts and an efficiency, volume and cost Pareto front with error bands, each design verified by an exact steady-state simulation.
2D Field Solver
Free-to-try 2D finite-element solver in the browser for axisymmetric and planar magnetostatic and eddy-current problems: flux plots, inductance, force and losses, with frequency sweeps.
Try the Magnetics Designer.
Frequently asked questions
Can I design a transformer as well as an inductor?
Yes. The Magnetics Designer handles both: for a transformer it reports the turns, magnetising and leakage inductance, losses and temperature rise.
Does it include proximity-effect winding loss?
Yes. AC winding resistance includes skin and proximity effects, and the result separates winding loss from core loss.
Can I use the designed inductor in a circuit simulation?
Yes. A designed part can be exported to the Circuits & Power Electronics module so the converter simulation sees its real inductance and losses.