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Precision-engineered magnetic components designed specifically for electric vehicle charging applications — delivering superior efficiency, thermal stability, and EMI compliance.
Wireless Charging Coil Inductor for EV Charging Stations — Qi Standard, Passive Components Supplier & Factory
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EV Charging Station Power Transformer — EI-76x45 130VA 110V to 220V Step-Up with Mounting Bracket for Industrial Power Conversion
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Custom Ferrite Rod Core Coil Inductor for EV Charging EMI Suppression — High Q, Low DCR, Screened & Unscreened Types
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Miniature Inductor Coil Micro Coil 0.011mm 56 AWG for EV Charging Control Circuits — China Suppliers & Factory
View DetailsAs global electric vehicle adoption accelerates at an unprecedented pace, the demand for reliable, high-efficiency power electronics within EV charging stations has never been greater. At the heart of every charging system — from Level 1 home chargers to 350 kW ultra-fast DC fast chargers — lies a carefully engineered ecosystem of inductors and transformers that govern energy conversion, filtering, and isolation.
Inductors in EV charging systems serve multiple vital functions: they smooth pulsating DC currents in PFC (Power Factor Correction) stages, reduce switching noise in DC-DC converters, and store magnetic energy during switching transitions in resonant topologies such as LLC and LCC converters. Transformers, meanwhile, provide galvanic isolation between the grid and the vehicle, step voltages to appropriate levels, and enable bidirectional power flow in V2G (Vehicle-to-Grid) capable stations.
The performance of these magnetic components directly impacts charger efficiency, thermal management, electromagnetic compatibility (EMC), and overall system reliability — making component selection a critical engineering decision for charging station OEMs and infrastructure operators worldwide.
Our inductors and transformers are purpose-built for the demanding electrical and thermal environments of EV charging infrastructure.
Optimized ferrite core materials and winding geometries enable efficient operation at 50 kHz–500 kHz switching frequencies, minimizing core losses in LLC resonant converters and interleaved PFC stages common in modern EV chargers.
Rated for continuous operation at elevated temperatures (Class H insulation, 180°C), our components maintain inductance stability across the full operating temperature range of EV charging environments — from arctic cold to desert heat.
Purpose-designed common-mode chokes, differential-mode inductors, and shielded transformer structures suppress conducted and radiated emissions to meet CISPR 32, IEC 61851, and ENERGY STAR requirements for EV charging equipment.
Symmetric winding constructions and low-leakage inductance designs support bidirectional power flow for V2G and V2H applications, enabling EVs to return stored energy to the grid or home during peak demand periods.
Advanced planar transformer and flat wire inductor technologies achieve power densities exceeding 5 kW/L, enabling the miniaturization of onboard chargers (OBC) and DC-DC converters in space-constrained EV platforms.
All components comply with IEC 61558, UL 5085, and automotive-grade AEC-Q200 standards. IATF 16949 certified manufacturing processes ensure zero-defect quality for safety-critical EV charging applications.
By 2030, over 300 million electric vehicles are projected to be on the road globally, requiring an estimated 40 million public charging points. Every single charger — from a 7 kW AC wallbox to a 350 kW ultra-fast HPC station — depends on precision inductors and transformers to deliver safe, efficient, and reliable power. Golden Eagle's magnetic components are already embedded in charging infrastructure deployed across Asia, Europe, and North America.
Understanding the evolving landscape helps engineers and procurement teams make informed decisions about magnetic component specifications.
Leading EV platforms from Porsche, Hyundai, and Kia are adopting 800V battery architectures to enable 350 kW ultra-fast charging. This demands transformers and inductors rated for higher insulation voltages (1500V+) and optimized for reduced copper losses at lower currents, driving a new generation of high-voltage magnetic component designs.
The adoption of Silicon Carbide (SiC) MOSFETs and Gallium Nitride (GaN) transistors in EV charger power stages is pushing switching frequencies above 500 kHz. This requires inductors and transformers with ultra-low core losses at high frequencies — driving demand for nanocrystalline and amorphous core materials alongside advanced ferrite formulations.
Wireless Power Transfer (WPT) systems for EV charging are transitioning from pilot projects to commercial deployment, with SAE J2954 standardizing 3.7 kW to 22 kW wireless charging. Resonant coil inductors operating at 85 kHz are the core enabling technology, requiring precise Q-factor control, coil alignment tolerance, and foreign object detection compatibility.
Vehicle-to-Grid (V2G) technology is being mandated in several European markets and incentivized in the US and Japan. Bidirectional chargers require transformers and inductors with symmetric magnetic characteristics, low hysteresis losses under AC-biased conditions, and robust insulation to handle reverse power flow scenarios reliably.
The trend toward integrated OBC + DC-DC converter modules in EVs demands shared magnetic components that serve dual functions — reducing BOM count, weight, and cost. Multi-winding transformer designs and coupled inductor topologies are enabling this integration, requiring specialized manufacturing expertise and tight parameter tolerances.
Modern charging stations incorporate smart metering, OCPP communication, and dynamic load management. The control electronics within these systems rely on miniature signal-level inductors, isolation transformers for communication interfaces, and RFID coils for authentication — expanding the scope of magnetic components beyond pure power conversion.
Inductors and transformers serve distinct and critical roles across every segment of the EV charging ecosystem.
7 kW–22 kW AC chargers use EMI filter inductors (common-mode chokes), PFC boost inductors, and isolation transformers in their onboard power electronics. Compact toroidal and EE-core inductors with low DCR are preferred for their space efficiency and quiet operation in residential environments.
High-power DC fast charging stations employ multi-phase interleaved PFC inductors, LLC resonant transformers with tight coupling coefficients, and output filter inductors. At 350 kW, thermal management of magnetic components becomes paramount — requiring liquid-cooled or forced-air designs with optimized thermal interfaces.
Depot charging for electric buses and trucks operates at 150 kW–600 kW with extended duty cycles. The magnetic components in these systems must withstand continuous full-load operation, vibration from industrial environments, and wide ambient temperature ranges while maintaining >97% efficiency.
Ground assembly and vehicle assembly coils for wireless EV charging use large-format litz wire inductors operating at 85 kHz. Precise inductance matching, high Q-factor (>200), and robust ferrite shielding structures are essential for achieving >90% coil-to-coil efficiency at 200mm air gaps.
The OBC converts AC grid power to DC for the vehicle battery. It uses a PFC inductor stage followed by an isolated DC-DC converter with a high-frequency transformer. Weight and volume constraints in EVs demand planar transformers and integrated magnetics achieving >6 kW/L power density with <0.5% total harmonic distortion.
V2G stations require bidirectional AC-DC and DC-DC conversion stages where inductors and transformers must handle power flow in both directions. Special attention is given to minimizing asymmetric saturation, ensuring consistent inductance under both positive and negative current bias, and maintaining isolation integrity over millions of charge-discharge cycles.
Trusted by global industry leaders, backed by decades of magnetic component manufacturing excellence.
Founded in 2007, Dong Guan Golden Eagle Coil Co., Ltd. is a diversified sole proprietorship integrating research and development, production, sales, and industry-trade. For over 17 years, we have been providing high-quality magnetic components and power electronics to industry giants including HUAWEI, XIAOMI, DJI, SIEMENS, TDK, Samsung, BOSE, and many others.
Our deep expertise in inductor and transformer manufacturing for EV charging stations positions us as a trusted partner for charging infrastructure OEMs, automotive Tier 1 suppliers, and energy storage system integrators worldwide.
The company operates nearly 100 hollow automatic winding machines, Alpha automatic winding machines, and transformer automatic winding machines — providing the production capacity and process control required for high-volume EV charging component supply.
Golden Eagle passed ISO 9001 in 2007 and IATF 16949 automotive quality system certification, intellectual property certification in 2017, and was recognized as a "High-tech Enterprise in Guangdong Province" in 2017. In 2024, we achieved the qualification of "SRDI" (Specialized, Refined, Differential, and Innovative Enterprise). In 2025, we passed the ISO 13485 Medical Quality Management System Certification — demonstrating our commitment to the highest quality standards across all industries we serve.
Our products are applied in industrial electronics, acoustic electronics, security electronics, small home appliances, monitoring systems, IoT sensors, beauty instruments, drone sensors, medical devices, wireless chargers, charging piles, 5G, new energy, and other fields — providing customers with one-stop solutions for research, development, and manufacturing.
Our comprehensive certification portfolio ensures compliance with global EV charging and automotive quality requirements.
Explore our extended range of magnetic components for every stage of the EV charging power conversion chain.
China Wireless Charging Coil Inductor — Qi Wireless Charger for EV Charging Stations, Passive Components Supplier & Factory
View DetailsEI-76x45 130VA 110V to 220V Step-Up Low Frequency Transformer — EV Charging Station Industrial Power Conversion
View DetailsCustom Ferrite Rod Core Coil Inductor — High Q, Low DCR for EV Charging Wireless Power Transfer & EMI Suppression
View DetailsMiniature Inductor Coil Micro Coil 0.011mm 56 AWG — EV Charging Station Control & Sensing Applications
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Multi-Output Low Frequency Transformer (24V Input) — EV Charging Station Auxiliary Power & Industrial Electronics
View DetailsWireless Charging Coil Inductor for EV Charging Stations — Electromagnetic Induction Technology, China Suppliers & Factory
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High Frequency Transformer — EV Charging Station Step-Up Power Solutions, Ultra-Thin Design, China Suppliers & Factory
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Miniature Ferrite Core Inductor Coil 5mm — Small Air Core Copper Wire Winding Coil for EV Charging Station Electronics
View DetailsWhether you're designing a 7 kW home charger or a 350 kW ultra-fast charging hub, Golden Eagle's engineering team is ready to develop custom inductor and transformer solutions tailored to your exact specifications. Contact us today for samples, technical datasheets, and OEM pricing.
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