Medical Isolation Transformer Design: IEC 60601-1 Requirements
MOPP and MOOP insulation levels, leakage current limits, inter-winding capacitance reduction and the construction details that make a medical isolation transformer pass IEC 60601-1.
Litz Wire vs Round Wire: Which to Use in Magnetics?
Choosing the right winding wire is one of the most important decisions in magnetic component design. Round magnet wire is simple and cheap, but at high frequency, AC resistance can be several times the DC resistance due to skin and proximity effects. Litz wire solves this problem but adds cost and complexity. This guide explains […]
Ferrite vs Powder Core: How to Choose for Inductors
One of the most common questions in inductor design is: should I use a ferrite core or a powder core? Both are widely used, but they have fundamentally different magnetic properties, saturation behavior, and best use cases. This guide compares ferrite and powder cores to help you choose the right material for your inductor. Shaanxi […]
LLC Resonant Transformer Design Guide
The LLC resonant converter has become the top choice for high-efficiency, high-density power supplies—server power, telecom rectifiers, EV onboard chargers, and industrial power. Its zero-voltage switching (ZVS) capability enables very high efficiency (96–98%) at high switching frequencies. This guide covers LLC resonant transformer design fundamentals. Shaanxi SiRui Technology Co., Ltd. designs and manufactures LLC resonant […]
Flyback Transformer Design Guide for SMPS
The flyback converter is the most popular isolated topology for low-to-medium power power supplies—chargers, adapters, LED drivers, auxiliary power supplies. The flyback transformer is the key component that provides isolation, energy storage and voltage transformation. This guide walks through flyback transformer design step by step. Shaanxi SiRui Technology Co., Ltd. designs and manufactures flyback transformers […]
Through-Hole vs SMD Inductors: Which to Choose?
Surface-mount device (SMD) inductors dominate modern power electronics for good reason—they’re compact, automatable and cost-effective at scale. But through-hole inductors still have important advantages in high-power, high-isolation and harsh-environment applications. This guide compares through-hole and SMD inductors across key parameters to help you decide. Shaanxi SiRui Technology Co., Ltd. manufactures both SMD and through-hole inductors. […]
Boost Converter Inductor Design: Step-by-Step Guide
The boost converter steps up a lower input voltage to a higher output voltage. The boost inductor is the energy storage element that makes this possible. Designing the boost inductor correctly—with the right inductance, saturation margin and low loss—is critical for efficiency and stability. This guide walks through boost converter inductor design from first principles. […]
Buck Converter Inductor Design: Step-by-Step Guide
The inductor is the heart of a buck converter. Its value determines ripple current, transient response, and efficiency. Getting the buck inductor right is the difference between a clean, efficient converter and one that buzzes, overheats, or misbehaves under load. This guide walks through buck converter inductor design from ripple specification to core selection and […]
Gate Drive Transformer Design for SiC and GaN Power Devices
Silicon carbide (SiC) and gallium nitride (GaN) power switches are revolutionizing high-voltage, high-frequency power conversion. But they also place new demands on gate drive circuits—and the gate drive transformers that provide isolated drive. Fast switching speeds, high dv/dt, and high switching frequencies require gate drive transformers designed specifically for these wide-bandgap devices. This guide covers […]
Toroidal vs EE Core Inductor: Which to Choose?
When designing an inductor, one of the first decisions is the core shape: toroidal (ring) or EE/EI (bobbin-based). Each has distinct advantages in performance, cost, size and manufacturability. The right choice depends on your application, power level and cost target. This guide compares toroidal and EE core inductors across key parameters to help you decide. […]