Engineering

Magnetic Design & Topology

A deeper engineering view of transformer topologies, winding technologies, core materials and EMI magnetic design.

Magnetic Topology

LLC Resonant

Magnetic design considerations include resonant operation, switching frequency, circulating current, core loss and thermal limits.

Phase-Shifted Full Bridge

Transformer and leakage characteristics need to be considered together with switching behaviour and power-transfer requirements.

Flyback

Energy storage, gap, peak current, switching frequency and thermal behaviour are central to magnetic design.

Active Clamp / Push-Pull

Winding arrangement, reset behaviour, flux balance and switching stresses influence the magnetic structure.

Winding technologies

Depending on frequency and power density, the approved capability includes Litz wire, planar copper foil and triple-insulated wire. These choices influence AC resistance, insulation, thermal performance, manufacturability and mechanical construction.

Core and loss considerations

Core selection should consider operating frequency, flux density, DC bias, material loss and physical size. Copper loss, proximity effects and thermal transfer must be considered alongside the magnetic specification.

EMI magnetic design

Common-mode and differential-mode chokes are selected and designed according to the noise mechanism, current path, required impedance behaviour and thermal conditions.