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High Performance High Frequency Transformer Power Conversion Core Compact E28 Ferrite Switching Power Supply Transformer

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High Performance High Frequency Transformer Power Conversion Core Compact E28 Ferrite Switching Power Supply Transformer

Supply Ability : 50000

Brand Name : ZXY

Model Number : ZXY-E28

Certification : RoHS、ISO9001、CE

Place of Origin : Shenzhen Guangdong

MOQ : Negotiable

Price : Negotiable

Delivery Time : 3-4weeks

Packaging Details : Carton

Payment Terms : L/C,D/A,D/P,T/T

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Product Overview

The E28 high-frequency transformer is a high-performance power conversion core specifically designed for switching power supplies. It delivers exceptional efficiency and stability in a compact E28 ferrite package, making it an ideal solution for modern, space-constrained power applications that demand reliability.

Built on the EE28 ferrite core, this transformer is the cornerstone of high-performance switching power supplies. It stands out by offering high power density in a compact form, superior energy efficiency to reduce thermal stress, and excellent reliability for demanding applications — ensuring stable and efficient power conversion.

Core Functions & Operating Principles

The E28 high-frequency transformer is essentially an electromagnetic energy conversion and transfer device based on an EE28 ferrite core, playing a crucial role in the switching power supply circuit. Its main functions include:

1. Core Energy Function: Efficient Power Conversion and Transmission
  • Voltage/current conversion: Based on its turns ratio, the pulse-type high-frequency AC voltage/current on the input side (primary) is efficiently converted into the different voltage/current levels required on the output side (secondary) to meet load demand.
  • Energy transfer and storage: During each switching cycle, the energy of the power supply is coupled from the primary to the secondary through a magnetic field, with temporary storage and release of energy achieved in the topology (such as flyback).
2. Key Safety and System Functions: Electrical Isolation and Signal Coupling
  • Electrical isolation: This is its safety-critical function. By using magnetic coupling instead of electrical connection, a reliable high-voltage electrical isolation barrier is established between the primary (high-voltage side) and secondary (low-voltage side) to meet safety requirements (such as creepage distance and withstand voltage requirements in UL and CE certifications) and protect the safety of low-voltage equipment and personnel.
  • Signal feedback coupling: In designs with feedback loops, dedicated windings can be used to transmit isolated feedback signals (such as output voltage sampling) to achieve closed-loop control.
3. Derivative Performance Functions: Optimizing System Performance
  • Impedance matching: Implements impedance transformation between switching transistors (such as MOSFETs) and loads to maximize power transmission.
  • Suppressing common mode interference: By using a reasonable winding structure and shielding design, common mode electromagnetic interference (EMI) can be effectively suppressed, improving the electromagnetic compatibility of the system.
  • Multi-output: By designing multiple secondary windings, multiple sets of isolated or common-ground output voltages can be generated from a single transformer, simplifying the system architecture.
Performance Characteristics
Feature Category Key Characteristics Description / Benefit
Core & Material EE28 Ferrite Core Standardized size offering excellent cost-performance ratio and wide availability.
Core & Material High-Frequency Ferrite Material (e.g., PC40, PC44) Low core loss at high frequencies (kHz to MHz range), ensuring high efficiency.
Core & Material Low Loss & High Saturation Flux Density Enables higher power density and reliable operation under transient conditions.
Electrical Performance High Efficiency (>90% typical) Minimizes energy loss as heat, crucial for thermal management and energy-saving designs.
Electrical Performance Excellent Coupling & Low Leakage Inductance Improves energy transfer, reduces voltage spikes, and enhances overall regulation.
Electrical Performance High Isolation Voltage (e.g., 3kV AC) Provides safe galvanic isolation between primary and secondary, meeting safety standards.
Thermal & Reliability Good Thermal Stability Maintains stable performance across a wide operating temperature range (e.g., -40°C to +125°C).
Thermal & Reliability Optimized Winding Structure Reduces copper loss (I²R loss) and minimizes hot spots for better heat dissipation.
Thermal & Reliability Robust Mechanical Construction Resists vibration and thermal cycling, ensuring long-term reliability in harsh environments.
Application-Oriented Design Compact Size & High Power Density Ideal for space-constrained applications like adapters, LED drivers, and auxiliary power supplies.
Application-Oriented Design Low Electromagnetic Interference (EMI) Facilitates easier compliance with EMC regulations through controlled parasitics and shielding options.
Application-Oriented Design Flexible Winding Configurations Supports multiple outputs and various topology requirements (Flyback, Forward, etc.).
Compliance & Standards RoHS & REACH Compliant Meets environmental regulations for hazardous substances.
Compliance & Standards Designed to Meet Safety Standards (e.g., UL, IEC) Can be engineered and certified according to end-application requirements.
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Company Profile
High Performance High Frequency Transformer Power Conversion Core Compact E28 Ferrite Switching Power Supply Transformer High Performance High Frequency Transformer Power Conversion Core Compact E28 Ferrite Switching Power Supply Transformer

Product Tags:

High Efficiency High Frequency Transformer

      

3kV AC Isolation Power Conversion Core

      

Compact Size EE28 Ferrite Core

      
China High Performance High Frequency Transformer Power Conversion Core Compact E28 Ferrite Switching Power Supply Transformer factory

High Performance High Frequency Transformer Power Conversion Core Compact E28 Ferrite Switching Power Supply Transformer Images

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