High-frequency transformers (HFTs) are categorized by six key criteria: operating frequency (low/medium/high band), magnetic materials (iron-core/coreless), structural topologies (conventional/planar/toroidal), application fields (power/signal/magnetic components), encapsulation forms (open/closed-frame), and cooling methods (air/liquid). These classifications enable optimized designs for efficiency, size reduction, and EMI suppression in power electronics, such as switching power supplies and inverters Read More »