Product Introduction

High frequency flyback transformer is a magnetic component for high-frequency switching power supplies, with an operating frequency of 10kHz–1MHz. Used in isolated AC-DC/DC-DC flyback power supplies, it transfers energy by storing and releasing power sequentially, unlike direct-transmission power-frequency transformers. It is typically equipped with PC40, PC44, PC95 or PC96 ferrite cores.

Product Features

• Adopts ferrite cores and realizes time‑sharing energy transmission.

• Provides electrical isolation between circuits.

• Features simple circuit structure.

• Features low production cost.

• Supports easy multi‑channel output.

• Provides inherent short‑circuit protection.

• Compact and lightweight in size.

• Suitable for medium and small power isolated DC power supplies.

Application Fields

High-frequency flyback transformers are mainly used in:

Power Adapters

Household Appliances

Instruments and Meters

Communication Networks

FAQ

Q: What is the working principle of a high-frequency flyback transformer?

A: A high frequency flyback transformer typically features a core with an air gap. The function of the air gap is to store energy. The transformer operates by means of high-frequency switching of the switching transistor. When the switching transistor is turned on, the primary winding stores energy while the secondary winding is cut off, resulting in no output. When the switching transistor is turned off, the stored energy in the primary side is released, the core delivers energy, and the secondary side becomes conductive to supply power to the load. Energy is first stored in the form of magnetic energy and then released, enabling isolated step-down voltage conversion and multiple outputs. As such, the flyback transformer is an energy-storage type isolated switching power supply magnetic component.

Product Parameters

Model No.:	EF25	Withstand Voltage:	375V/60S/2mA
Power Rating:	120W	Temperature Class:	Class F
Inductance:	789uH±10%	Turns Ratio:	64:10:8:9