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EP7 Miniature Flyback Transformer with High Isolation Voltage

The EP7 Flyback Transformer is a high-performance, miniaturized component designed for isolated power supplies, sensor interfaces, telecom converters and PoE applications. With a compact and integrated structure, it requires fewer external components and saves PCB space. It supports wide input voltage and customizable output, features long-term reliability without aging, and provides a cost-effective, easy-to-integrate solution for PoE equipment and industrial power systems.

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EP7 Miniature Flyback Transformer with High Isolation Voltage EP7 Flyback Transformer EP7 Transformer EP7 Flyback Transformer Manufacturer Custom EP7 Transformer

Product Description

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Product Overview

The EP7 Flyback Transformer is a high-performance, miniaturized power electronic component optimized for isolated power design, Sensor interfaces, isolated telecom converters and Power over Ethernet (PoE) applications. Adopting a highly integrated design with standard circuit architecture, this transformer features low design complexity, minimal external component requirements and compact board space occupation. It supports wide voltage input and customizable output power/voltage, with no optocoupler needed for voltage control and long-term reliability without aging, making it a cost-effective and easy-to-integrate solution for PoE devices (IP phones, WLAN access points, access control terminals, security cameras) and industrial power supply systems.

Core Advantages

Integrated Design & Easy Customization

Standard circuit architecture enables simple custom power supply design by only changing the transformer and two feedback loop components; the same external parts apply to different output voltages, reducing R&D cycle and design costs.

High Reliability & Stable Performance

Optocoupler-free voltage control design realizes long-term reliable voltage regulation with no aging issue; supports a wide operating temperature range of -40℃ to +125℃, adapting to harsh industrial and commercial working environments.

Miniaturization & Cost Efficiency

Compact size occupies small PCB board space and requires fewer external components, effectively reducing the overall BOM cost of power supply systems while meeting high integration demands of miniaturized electronic devices.

High Isolation & Safe Operation

Provides 1.5KVAC/1min isolation voltage with excellent dielectric strength, ensuring safe electrical isolation between input and output, and complying with the safety requirements of industrial and telecom power supply applications.

Full Process Traceability

Equipped with a unique production traceability code for each batch; raw material suppliers, production workshops, test data, delivery dates and other information are all traceable. A detailed batch traceability report can be provided within 1 working day upon customer service application, realizing traceable product quality and locatable responsibilities.

Physical Properties

Order Code	VIN	Vout1 (V)	lout1 (A)	Vout2 (V)	lout2 (A)	Vout3 (V)	lout3 (A)	Vout4 (V)	lout4 (A)	Vaux (V)	L (μH)	n	ISAT (A)	Ls (μH)	VT (V(AC))
INF-EP7-80μH	8-15V(DC)	150	0.001	-150	0.001	-	-	-	-	-	80	1:5:5	1	2	1500
INF-EP7-50μH	10-30V(DC)	5	1	-	-	-	-	-	-	5	50	3:1:1	1.6	1	1500
INF-EP7-50μH	10-30V(DC)	5	1	-	-	-	-	-	-	5	50	3:1:1	1.6	1	1500
INF-EP7-30μH	10-30V(DC)	5	1	-	-	-	-	-	-	5	30	3:1:1	1.7	1	1500
INF-EP7-30μH	10-30V(DC)	5	1	-	-	-	-	-	-	5	30	3:1:1	1.7	1	1500
INF-EP7-25μH	10-30V(DC)	15	0.4	-	-	-	-	-	-	5	25	1:1:0.33	2	0.3	1500
INF-EP7-25μH	10-30V(DC)	15	0.4	-	-	-	-	-	-	5	25	1:1:0.33	2	0.125	1500

Technical Specifications

屏幕截图 2025-11-03 101005

Typical Applications

Power over Ethernet (PoE)：IP phones, WLAN access points, access control terminals, security cameras (PoE PD dedicated models available)
Isolated Power Design：Industrial control power supplies, medical equipment auxiliary power supplies
Sensor Interfaces：Industrial sensor signal isolation and power supply matching
Isolated Telecom Converters：5G communication equipment, telecom base station auxiliary power supplies
Small DC-DC Converters：Miniaturized electronic devices, portable industrial equipment

Customization & Procurement

Flexible ODM/OEM Services

Provide full ODM/OEM support for the EP7 Flyback Transformer, including custom input/output voltage, inductance value, winding ratio and pin layout. Our technical team delivers tailored solutions for special PoE and industrial power supply applications.

Customer-Friendly Procurement Terms

No MOQ (Minimum Order Quantity) policy
Free samples (5 pieces per order) for testing and verification
Fast lead times: 3–5 working days for standard samples; 7–10 working days for custom samples
Mass production lead time: 15–30 working days
Flexible packaging solutions and worldwide shipping support