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Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger

Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger

Nome da marca: ZXY
Número do modelo: ZXY-EF25
MOQ: Negociável
preço: Negociável
Detalhes da embalagem: Caixa
Informações detalhadas
Lugar de origem:
Shenzhen Guangdong
Certificação:
RoHS、ISO9001、CE
Descrição do produto

Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger

1.Product Description

The EF25 high-frequency transformer is a compact ferrite core transformer designed specifically for flyback topologies in switch mode power supplies (SMPS), battery chargers, and power adapters. The power range is 10W to 30W, the operating frequency is 20kHz to 200kHz, the performance is stable, the temperature rise is low, and the efficiency is high. 5+5 pin configuration, inductor voltage size, and other specifications are fully customizable. Very suitable for applications with limited space but requiring reliability and customized specifications.


Application Scenario: 24W USB-C Fast Charger for smartphones and tablets

How the EF25 Transformer Works in This Product:
Inside the charger, the EF25 high frequency transformer is used in a flyback SMPS circuit. It steps down the high voltage AC (100-240V) to a low voltage DC (5V, 9V, 12V, or 15V) while providing isolation for safety. The transformer operates at 100kHz switching frequency, delivering up to 24W of power (e.g., 12V / 2A or 15V / 1.6A). Its compact EF25 core size fits perfectly inside the small USB-C charger housing, while the custom winding ensures low leakage inductance and high efficiency (>88%), reducing heat generation during fast charging.

Why Choose the EF25 for This Application:

  • Small footprint fits slim charger design

  • Supports multiple output voltages for fast charging protocols (QC/PD)

  • Low temperature rise ensures safe surface temperature

  • Customizable parameters meet specific voltage and current requirements


2.Performance Characteristics

Parameter Specification
Core Type EF25 (Ferrite Core)
Topology Flyback
Power Range 10W – 30W
Pin Configuration 5+5 Pin (customizable)
Operating Frequency 20kHz – 200kHz
Hi-Pot Test 1500V AC / 1min (or custom)
Insulation Class Class B (130°C) / Class F (155°C) optional
Compliance RoHS, REACH

Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger 0

Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger 1

Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger 2

Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger 3

Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger 4

Bom preço.  on-line

Detalhes dos produtos

Para casa > produtos >
transformador de alta frequência
>
Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger

Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger

Nome da marca: ZXY
Número do modelo: ZXY-EF25
MOQ: Negociável
preço: Negociável
Detalhes da embalagem: Caixa
Informações detalhadas
Lugar de origem:
Shenzhen Guangdong
Marca:
ZXY
Certificação:
RoHS、ISO9001、CE
Número do modelo:
ZXY-EF25
Quantidade de ordem mínima:
Negociável
Preço:
Negociável
Detalhes da embalagem:
Caixa
Tempo de entrega:
3-4 semanas
Descrição do produto

Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger

1.Product Description

The EF25 high-frequency transformer is a compact ferrite core transformer designed specifically for flyback topologies in switch mode power supplies (SMPS), battery chargers, and power adapters. The power range is 10W to 30W, the operating frequency is 20kHz to 200kHz, the performance is stable, the temperature rise is low, and the efficiency is high. 5+5 pin configuration, inductor voltage size, and other specifications are fully customizable. Very suitable for applications with limited space but requiring reliability and customized specifications.


Application Scenario: 24W USB-C Fast Charger for smartphones and tablets

How the EF25 Transformer Works in This Product:
Inside the charger, the EF25 high frequency transformer is used in a flyback SMPS circuit. It steps down the high voltage AC (100-240V) to a low voltage DC (5V, 9V, 12V, or 15V) while providing isolation for safety. The transformer operates at 100kHz switching frequency, delivering up to 24W of power (e.g., 12V / 2A or 15V / 1.6A). Its compact EF25 core size fits perfectly inside the small USB-C charger housing, while the custom winding ensures low leakage inductance and high efficiency (>88%), reducing heat generation during fast charging.

Why Choose the EF25 for This Application:

  • Small footprint fits slim charger design

  • Supports multiple output voltages for fast charging protocols (QC/PD)

  • Low temperature rise ensures safe surface temperature

  • Customizable parameters meet specific voltage and current requirements


2.Performance Characteristics

Parameter Specification
Core Type EF25 (Ferrite Core)
Topology Flyback
Power Range 10W – 30W
Pin Configuration 5+5 Pin (customizable)
Operating Frequency 20kHz – 200kHz
Hi-Pot Test 1500V AC / 1min (or custom)
Insulation Class Class B (130°C) / Class F (155°C) optional
Compliance RoHS, REACH

Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger 0

Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger 1

Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger 2

Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger 3

Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger 4