Magnetic Components for EV Chargers: Design Guide
Electric vehicle (EV) chargers—from onboard chargers (OBC) to DC fast chargers—rely heavily on magnetic components. The power density, efficiency and reliability of every charger depends on the inductors, transformers and filters inside. This guide covers the key magnetic components in EV chargers and their design requirements. Shaanxi SiRui Technology Co., Ltd. manufactures PFC inductors, LLC […]
Magnetic Components for Solar Inverters: Design Guide
Solar inverters are one of the fastest-growing applications for power magnetics. Whether string inverters, microinverters or central inverters, the magnetic components—boost inductors, isolation transformers, filter chokes and current sensors—directly determine efficiency, reliability and cost. This guide covers the key magnetic components in solar inverters and their design requirements. Shaanxi SiRui Technology Co., Ltd. manufactures boost […]
Thermal Design of Transformers and Inductors: Practical Guide
Thermal management is often the difference between a magnetic component that works on the bench and one that fails in the field. Transformers and inductors heat up from both core loss and copper loss, and every 10°C rise cuts magnet wire insulation life roughly in half. This guide covers thermal design principles for power magnetics, […]
Core Shape Selection: EE vs EI vs Toroidal vs ETD vs Planar
Choosing the right core shape is one of the first decisions in magnetic component design. Each core geometry has trade-offs in winding area, flux path, mounting, cost and performance. The right choice depends on power level, frequency, height constraint and manufacturing volume. This guide compares the most common core shapes and helps you select the […]
Litz Wire Design: Reduce Skin and Proximity Loss in High-Frequency Windings
At switching frequencies above 50 kHz, solid wire windings suffer from skin effect and proximity effect, causing winding resistance to skyrocket and efficiency to drop. Litz wire—made of many thin, individually insulated strands twisted together—solves both problems. This guide explains litz wire construction, strand selection, and design rules for high-frequency transformers and inductors. Shaanxi SiRui […]
Magnetic Shielding Design: Materials and Techniques Guide
Magnetic shielding is essential in applications where stray magnetic fields cause interference—from medical devices and sensitive electronics to audio equipment and industrial sensors. Unlike electric field shielding, magnetic shielding requires high-permeability materials to redirect and absorb magnetic flux. This guide covers magnetic shielding principles, material selection, and practical design techniques. Shaanxi SiRui Technology Co., Ltd. […]
Resonant Converters: ZVS vs ZCS Topologies for High-Efficiency Power
Resonant converters use LC resonant tanks to achieve zero-voltage switching (ZVS) or zero-current switching (ZCS), eliminating switching loss and enabling much higher efficiency and frequency than hard-switched topologies. These converters are the standard choice for server power, EV chargers and telecom power supplies. This guide compares the main resonant topologies and their magnetic component requirements. […]
Steinmetz Equation: Core Loss Calculation for Magnetic Design
Core loss is one of the most critical calculations in magnetic component design. Too little core loss calculation and your transformer overheats; too conservative and you oversize the core. The Steinmetz equation is the standard empirical model for estimating core loss in ferrite and powder cores. This guide explains the Steinmetz equation, how to use […]
SMD Inductor Selection for DC-DC Converters: Practical Guide
Selecting the right SMD inductor for a DC-DC converter is one of the most common tasks in power electronics design. The inductor value, saturation current, DCR and package size directly determine efficiency, transient response and solution size. This guide walks through the key parameters for SMD inductors and how to choose the right part for […]
How to Reduce EMI in Switching Power Supplies: Practical Guide
Electromagnetic interference (EMI) is the most common reason switching power supplies fail regulatory testing (CISPR 32, FCC Part 15). Conducted noise on the input lines and radiated EMI from the power loop can delay product launch by weeks. This practical guide covers the main sources of EMI in SMPS, and the most effective mitigation techniques—from […]