Magnetic Materials and Components
Technical Dialogue Session
Devices and Components II
Optimization, Converters, Flyback Converter, GaN, Transformer, Inductor, Magnetic, Miniaturize Magnetic Components, Frequency Optimization, RM Core
Magnetics optimization is paramount to overall power converter optimization. We introduce a method of transformer optimization applied to the example of a GaN-based active-clamp flyback converter using waveforms produced by a circuit simulator, allowing us to account for frequency-dependent waveform changes. An optimization routine is then used to find the minimum loss transformer design for a given RM core and frequency. With this holistic design approach, design calculations predict a 42% reduction in average transformer loss and a 19% reduction in total circuit loss in an already high-performing stock converter module.