Customized transformer PQ Series Switching Power Supply Electronic Adapter Transformer
PQ2012
PQ2012 high-frequency transformer uses ferrite round center-pole core, steel clamp for fixation, vertical PCB pins, with a power of 12-30W, frequency range of 50-500kHz, and low leakage inductance.
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The circular center column of the PQ transformer has smooth winding, high window utilization rate, and excellent leakage inductance control. The PQ shape is inherently equipped with local magnetic shielding, which reduces electromagnetic radiation and is conducive to EMI debugging.
Product parameters
| Power phase number | Three-phase | Frequency characteristics | High frequency |
| Moisture-proof method | Open-ended | Cooling method | Oil-cooled self-cooling type |
| Cooling form | Liquid/oil-immersed type | Brand | CXWON |
| Winding form | Three-winding | Core shape | PQ Type |
| Overall structure | Vertical | Efficiency (η) | 90% |
| PIN | 5+2pin | Rated power | 20w |
Main transformer models：
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Core advantages of PQ transformer
1. The circular central column allows smooth wire routing, with low bending stress of the conductors and high window utilization. This effectively reduces leakage inductance and suppresses switching spikes.
2. Compared to EE cores of the same power, it has lower magnetic leakage and less external electromagnetic radiation. It reduces interference from peripheral circuits and lowers the difficulty of overall EMC debugging and rectification.
3. The frame is equipped with isolation barriers, and three-layer insulated wires can be selected to easily meet creepage distance and primary-secondary enhanced insulation requirements.
4. Commonly used 4+4PIN and 5+5PIN frames, supporting main power winding + multiple auxiliary windings. The turns ratio, inductance quantity, pin arrangement, and output voltage can all be customized as needed.
5. Metal steel clips lock the magnetic core, compatible with fully automatic winding and automatic tape rolling equipment.
PQ transformer real-shot details：
Typical application scenarios
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FAQ
Q: What is the typical power of the PQ2012 high-frequency transformer?
A: The conventional applicable power is 12-30W. The actual power is determined by the working frequency, the material of the magnetic core, and the overall heat dissipation conditions of the device. It is not recommended to operate at full load for more than 30W for an extended period. For higher power, it is recommended to upgrade to PQ2016.
A: The conventional applicable power is 12-30W. The actual power is determined by the working frequency, the material of the magnetic core, and the overall heat dissipation conditions of the device. It is not recommended to operate at full load for more than 30W for an extended period. For higher power, it is recommended to upgrade to PQ2016.
Q: What is the applicable working frequency range of PQ2012?
A: Working frequency ranges from 50kHz to 500kHz. Typically, PC40 and PC44 manganese-zinc ferrite cores are selected. They are mainly suitable for flyback and forward-type switching power supply topologies.
Q: How is the PQ2012 magnetic core fixed?
A: The two halves of the magnetic core are clamped together using metal spring steel clips. There is no plastic casing. The structure is simple and suitable for internal assembly in power supplies.
Q: What benefits does the PQ2012 round core magnetic core bring?
A: The circular central column has low bending stress for the wiring and high utilization rate of the window, which is beneficial for reducing leakage inductance, minimizing switching voltage spikes, and improving the overall efficiency of the power supply.
Q: What is the normal temperature rise range for the PQ2012 under rated load conditions?
A: When the heat dissipation conditions are good, the temperature rise under rated load is ≤ 45K; excessive load, poor heat dissipation will result in excessively high temperature, decreased efficiency, and abnormal operating noise.
