Product Introduction
FBT is short for Flyback Transformer. Its working principle is as follows: when the switching transistor is turned on, the primary core stores energy through the air gap; when the switching transistor is turned off, the core releases energy and the secondary side outputs direct current. Common models include EE, PQ and EC types.
Product Features
• Simple structure and low cost
• Easy to realize multiple DC voltage outputs
• Compact size and high operating efficiency
• Low power rating and suitable for fully automated production
Application Fields
Flyback transformers are mainly used in:
FAQ
Q: What should be paid attention to in the design of flyback transformers?
A: Core air gap requirement: Due to the single-ended operating mode of the flyback transformer, a substantial DC bias component exists in the magnetic core. An air gap must be introduced to prevent core saturation and ensure reliable operation.
Leakage inductance mitigation: Leakage inductance poses a significant challenge in flyback transformer design, as it gives rise to voltage spikes and electromagnetic interference. To minimize leakage inductance, the interleaved sandwich winding configuration is typically adopted, in which the primary winding is split into two sections and the secondary winding is placed between them, thereby improving magnetic coupling.
Core material selection: To achieve compact size and lightweight construction, flyback transformers generally operate at high frequencies ranging from tens of kilohertz to several hundred kilohertz. Consequently, manganese-zinc ferrite is the preferred core material for such applications.
Product Parameters
|
Model No.: |
EF25 |
Withstand Voltage: |
3750V/60S/2mA |
|
Power Rating: |
80W |
Temperature Class: |
Class F |
|
Inductance: |
960uH±10% |
Turns Ratio: |
74:15:12 |
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