Chapter 1: What Makes a Resonant Converter Transformer Different?

Chapter 1 establishes the central idea for the entire Ultimate Guide to Resonant Converter Transformer Design: a resonant transformer is not merely a conventional transformer connected to a resonant converter. Its turns ratio, magnetizing inductance, leakage inductance, winding arrangement, parasitic capacitance, loss, and physical construction can directly influence the converter’s gain, operating-frequency range, soft-switching behavior, … Read more

Practical Design Examples and Automation — Chapter 15

Chapter 15 of the Ultimate Guide to Flyback Transformer Design brings the full workflow together with practical design examples and explains automated requirements checking, operating-corner analysis, candidate generation, core and winding optimization, CAD-ready geometry, manufacturing outputs, and engineering traceability.

Manufacturing, Testing, and Validation — Chapter 14

Chapter 14 of the Ultimate Guide to Flyback Transformer Design explains production winding specifications, turns and polarity control, magnetizing and leakage inductance tests, DCR, dielectric testing, first-article validation, process capability, traceability, and engineering change control.

Copper Loss, Core Loss, and Thermal Design — Chapter 13

Chapter 13 of the Ultimate Guide to Flyback Transformer Design explains temperature-corrected copper loss, skin and proximity effects, ferrite core loss, thermal resistance, winding and core hot spots, loss-temperature iteration, measurement, and a worked thermal example.

Leakage Inductance, Capacitance, and EMI — Chapter 12

Chapter 12 of the Ultimate Guide to Flyback Transformer Design explains coupling coefficient, leakage inductance, leakage energy, MOSFET overshoot, ringing, primary-secondary capacitance, common-mode EMI, interleaving, shields, measurement, and parasitic optimization.

Winding Arrangement, Isolation, and Safety — Chapter 11

Chapter 11 of the Ultimate Guide to Flyback Transformer Design explains winding order, split-primary and interleaved constructions, creepage and clearance, insulation barriers, triple-insulated wire, margins, auxiliary placement, electrostatic shields, lead routing, and production documentation.

Primary, Secondary, and Auxiliary Conductors — Chapter 10

Chapter 10 of the Ultimate Guide to Flyback Transformer Design explains primary, secondary, and auxiliary conductor selection using RMS current, copper area, DCR, skin effect, proximity effect, round wire, parallel strands, litz wire, foil, triple-insulated wire, terminations, and winding-window constraints.

Core Geometry and Magnetic Material Selection — Chapter 9

Chapter 9 of the Ultimate Guide to Flyback Transformer Design explains EE, ETD, PQ, EFD, RM, and planar core geometries, area product, winding window, mean turn length, ferrite material selection, core loss, saturation, temperature, and candidate ranking.

Flyback Transformer Air-Gap Design — Chapter 8

Chapter 8 converts the turns and magnetizing-inductance targets from Chapter 7 into the intentional magnetic reluctance required by a practical flyback transformer. The air gap is not a finishing adjustment: it is a primary design variable that controls magnetizing inductance, energy storage, current capability, fringing fields, tolerance, winding loss, and production repeatability. ← Previous Chapter … Read more

Primary Turns, Secondary Turns, and Flux Density — Chapter 7

Chapter 7 of the Ultimate Guide to Flyback Transformer Design explains primary-turn calculation from volt-seconds, integer secondary and auxiliary turns, realized turns ratio, flux-density verification, saturation margin, tolerances, and a worked design example.