EE power high frequency ferrite material EE19 transformer for IoT power module
EE19
EE19 high-frequency transformer is equipped with high-quality PC40 manganese-zinc ferrite cores and UL94-V0 flame-retardant frame. It is suitable for 20kHz - 200kHz high-frequency switching power supply conditions and is commonly applicable with power ranging from 10W to 40W.
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EE19 is made with pure enameled copper wire winding. It is a medium to small power general-purpose high-frequency transformer. The overall structure is compact, the magnetic core has high permeability, the high-frequency loss is low, the leakage inductance is low, the insulation performance is stable, the temperature rise is low, effectively improving the EMI interference problem of the entire machine.
Product parameters
| Rated power | 10W~40W | Cooling form | Dry type |
| Frequency characteristics | High frequency | Number of power phases | Single-phase |
| Cooling method | Oil-cooled self-cooling type | Moisture-proof method | Open type |
| Brand | CXWON | Winding form | Auto-coupling |
| PIN | 4+3 pin | Core shape | EE Type |
| Shape and structure | Horizontal type | Efficiency (η) | 85 - 95% |
Main transformer models：
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Core advantages of EE transformer
1. The winding structure is regular, with excellent leakage inductance control, effectively reducing the switching peak voltage.
2. EE19 is a medium-small power gold-sized component, with extremely strong power adaptability for 10-40W, and an extremely high degree of universality.
3. Low-loss magnetic core + low DCR winding, the overall temperature rise is small, and it is more stable during long-term operation.
4. It adopts V0-level flame-retardant frame, with high-temperature resistance, non-flammability, and a high insulation safety factor.
5. The magnetic core can be opened with air gaps as needed, effectively preventing magnetic saturation, and more stable in heavy-load conditions.
EE transformer real-shot details：
Typical application scenarios
Flowchart
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FAQ
Q: What is the typical value of the primary inductance for EE19?
A: In the regular production range, it is 600μH to 1200μH. It can be precisely customized according to the customer's circuit parameters, with a tolerance of ±10%/±15%.
A: In the regular production range, it is 600μH to 1200μH. It can be precisely customized according to the customer's circuit parameters, with a tolerance of ±10%/±15%.
Q: How much can the leakage inductance of EE19 be controlled?
A: It is generally controlled within 3% of the primary inductance. The leakage inductance can be further reduced through multi-layer winding or sandwich winding processes.
Q: What are the reasons for the temperature increase of the EE19 transformer?
A: The main reasons are: excessively high operating frequency, overload operation, small wire diameter with high DCR, high peak loss due to large leakage inductance, and poor heat dissipation due to excessive winding density.
Q: Is EE19 a surface mount or through-hole type?
A: The mainstream is a vertical DIP direct-insertion structure, which is suitable for automated plug-in production. The pin positions can be customized.
Q: What parameters need to be provided when selecting EE19?
A: Input and output voltage, output power, operating frequency, primary inductance, upper limit of leakage inductance, voltage withstand requirements, pin definition, whether to open air gaps or use three-layer insulated wires.
