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transformateur à haute fréquence
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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

Nom De Marque: ZXY
Numéro De Modèle: Pour les véhicules à moteur à combustion
Nombre De Pièces: Négociable
Prix: Négociable
Détails De L'emballage: Carton
Les informations détaillées
Lieu d'origine:
ShenzhenGuangdong
Certification:
RoHS、ISO9001、CE
Description du produit

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

Un bon prix.  en ligne

Détails Des Produits

À La Maison > Produits >
transformateur à haute fréquence
>
Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger

Custom EF25 High Frequency Transformer for Flyback SMPS Power Supply Charger

Nom De Marque: ZXY
Numéro De Modèle: Pour les véhicules à moteur à combustion
Nombre De Pièces: Négociable
Prix: Négociable
Détails De L'emballage: Carton
Les informations détaillées
Lieu d'origine:
ShenzhenGuangdong
Nom de marque:
ZXY
Certification:
RoHS、ISO9001、CE
Numéro de modèle:
Pour les véhicules à moteur à combustion
Quantité de commande min:
Négociable
Prix:
Négociable
Détails d'emballage:
Carton
Délai de livraison:
3-4 semaines
Description du produit

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