High-Efficiency Resonant Transformer for LED Industrial Uses

Product Overview

The INF ETD39 High-Efficiency Power Supply Transformer is an industrial-grade passive component engineered for high-voltage DC power conversion scenarios, tailored for ToB customers in power electronics, consumer electronics, and lighting industries. As a core component for resonant converters and regulated power supplies, this transformer features a 360–400 V DC input range, flexible 12/24/48 V output voltage configurations, and a switching frequency of 70–120 kHz, with an output power range of 150–250 W that perfectly matches medium-power load demands. Constructed with Litz wire for low eddy current losses and integrated predefined leakage inductance, the ETD39 DC power transformer eliminates the need for additional resonant inductors, simplifying circuit design and reducing BOM costs for manufacturers. Its robust structural design and high insulation performance make it a reliable choice for high-efficiency power supply systems of PCs, notebooks, and LED lighting equipment.

Core Advantages

High Power Conversion Efficiency

Adopting Litz wire winding technology, the ETD39 transformer minimizes eddy current losses during high-frequency operation, significantly improving overall power conversion efficiency. This design is especially optimized for 70–120 kHz switching frequency scenarios, ensuring stable efficiency even under full-load working conditions.

Integrated Leakage Inductance Design

With predefined leakage inductance (95 μH), the ETD39 resonant converter transformer does not require an extra resonant inductor, streamlining circuit layout and reducing the volume of power supply modules—an essential advantage for compact power supply design in consumer electronics and industrial equipment.

Superior Insulation Performance

Passing a 4 kV AC insulation test, the transformer has excellent voltage withstand capacity, which can stably operate under 360–400 V DC high input voltage, effectively preventing insulation breakdown and ensuring the safety and reliability of power supply systems.

Flexible Output Voltage Configurations

Supporting 12 V/24 V/48 V multi-channel output, it adapts to different load current requirements (16.7 A/8.3 A/4.2 A) and is equipped with an 18 V auxiliary voltage output, meeting the power supply needs of multi-module circuits in industrial and consumer electronic products.

Technical Specifications

Typical Applications

PC & Notebook Power Supplies

The 150–250 W output power and multi-voltage configuration of the ETD39 transformer match the power supply requirements of commercial and industrial-grade PCs and notebooks, ensuring stable power output and high energy efficiency.

LED Lighting Systems

Suitable for high-power LED lighting drivers, it can adapt to the high-voltage DC input of lighting power supplies and provide stable low-voltage output, improving the energy efficiency and service life of LED lighting equipment.

High-Efficiency Resonant Converters

As a dedicated component for resonant converters, its integrated leakage inductance design optimizes the resonant circuit, making it widely used in industrial high-efficiency power conversion equipment.

Industrial Power Supply Units

Applicable to various industrial auxiliary power supplies, it can stably operate in harsh industrial environments with its high insulation and voltage withstand performance, meeting the power supply needs of industrial control and automation equipment.

Certifications & Compliance

The INF ETD39 power transformer complies with international industry standards and has obtained CE certification and RoHS compliance (lead-free process), meeting the environmental protection requirements of the European and global markets. It also conforms to ISO 9001 quality management system standards, and its electromagnetic compatibility (EMC) performance meets IEC 61558 power transformer specifications, ensuring no electromagnetic interference to surrounding circuits during operation. All products pass 100% factory testing to ensure consistent performance and reliability.

Customization & Procurement

Customization Options

The standard packaging is bulk packaging, and the standard tolerance is 25%; customers can customize the tolerance, winding parameters and output voltage according to their own circuit design requirements, and the professional R&D team provides technical support for personalized customization.

Procurement Terms