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| ブランド名: | ZXY |
| モデル番号: | zxy-ei13*15 |
| MOQ: | 交渉可能 |
| 価格: | 交渉可能 |
| パッケージの詳細: | カートン |
| 支払条件: | T/T |
This 2.5VA EI13 * 15 power transformer is a high-frequency transformer designed specifically for switch mode power supplies (SMPS) and flyback topologies. It uses the classic EI-13 iron core (15mm thick stack) and high-quality enameled wire winding, with the characteristics of small size, high efficiency, and low leakage inductance. It is widely used in low-power AC-DC power adapters, smart home appliance control boards, LED drivers, and various electronic devices that require efficient power conversion and isolation. It is the core magnetic component for achieving compact switch mode power supply design.
The core function of this transformer is to achieve efficient energy conversion and electrical isolation. Specifically, its functions include:
1. Energy transmission and voltage conversion (core function): In flyback switching power supply circuits, it serves as the core energy storage and discharge component. When a high-frequency pulse current is applied to the primary coil, the transformer stores electrical energy in the form of a magnetic field; When the switch tube is closed, the secondary coil converts the magnetic energy into the required low voltage (or high voltage) electrical energy and releases it to the load, thereby achieving the conversion from AC to DC or different DC voltages.
2. Electrical isolation (safety critical): Its physical structure achieves complete electrical isolation between the input side (primary) and output side (secondary) circuits. This greatly enhances the safety of the system, preventing high voltage from entering the low voltage side and damaging equipment or causing electric shock hazards to the human body, while also effectively suppressing common mode interference.
3. Impedance matching and power limitation: Its nominal capacity of 2.5VA (volt ampere) specifies the limit of its designed transmission power, ensuring stable, efficient, and low-temperature operation of the transformer at rated power without damage due to overload, naturally limiting the maximum output power of the circuit.
4. * * High frequency operation * *: Designed specifically for high-frequency switching frequencies (usually ranging from tens of kHz to hundreds of kHz), it achieves miniaturization, lightweight, and high efficiency of power supply devices compared to power frequency transformers.
**In summary, its function is to safely and efficiently transfer high-frequency electrical energy from the primary side to the isolated secondary side in a compact space, and provide precise matching, power limited voltage to the load. **It is an indispensable energy transfer hub and safety isolation barrier in modern miniaturized switch mode power supplies (SMPS).
| Feature Category | Specification / Description | Benefit / Implication |
| Core Type & Size | EI-13, Stacked Thickness 15mm | Standardized, compact footprint for easy PCB mounting and integration into small form-factor designs. |
| Power Rating | 2.5VA (Volt-Ampere) | Defines the maximum apparent power it can handle, ensuring safe operation within its thermal and magnetic limits. |
| Topology | Flyback (SMPS) | Ideal for low-power, cost-effective switching power supply designs with multiple output voltage requirements. |
| Operating Frequency | High Frequency (Typ. 20kHz - 250kHz+) | Enables significant miniaturization compared to 50/60Hz transformers, leading to smaller and lighter power supplies. |
| Primary Inductance (Lp) | Custom value (e.g., 2.5mH ±10%) @ 1kHz | A critical design parameter that, in conjunction with frequency, determines the energy transfer per switching cycle. |
| Leakage Inductance | Minimized by design and winding technique | Improves efficiency, reduces voltage spike stress on the main switch (MOSFET), and enhances overall regulation. |
| Isolation Voltage | High Isolation (e.g., 3.1kV AC / 60s) | Provides critical safety protection between primary and secondary circuits, preventing electric shock and protecting users. |
| Winding Material | High-Quality Enameled Copper Wire | Low resistivity minimizes copper losses (I²R losses), improving efficiency and thermal performance. |
| Insulation Class | Class B (130°C) or higher | Ensures reliable operation and long service life at elevated temperatures commonly found in SMPS environments. |
| Regulation | Good (Load & Line) | Provides a stable output voltage despite variations in input voltage or output load current. |
| Efficiency | High (Typ. >85%) | Minimizes power loss as heat, allowing for higher power density and cooler operation of the end product. |
| Applications | AC/DC Adapters, Smart Home Devices, LED Drivers, Auxiliary Power Supplies (UPS, Industrial Controls), Battery Chargers. | A versatile component for a wide range of low-power electronic equipment requiring isolated DC power. |
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| ブランド名: | ZXY |
| モデル番号: | zxy-ei13*15 |
| MOQ: | 交渉可能 |
| 価格: | 交渉可能 |
| パッケージの詳細: | カートン |
| 支払条件: | T/T |
This 2.5VA EI13 * 15 power transformer is a high-frequency transformer designed specifically for switch mode power supplies (SMPS) and flyback topologies. It uses the classic EI-13 iron core (15mm thick stack) and high-quality enameled wire winding, with the characteristics of small size, high efficiency, and low leakage inductance. It is widely used in low-power AC-DC power adapters, smart home appliance control boards, LED drivers, and various electronic devices that require efficient power conversion and isolation. It is the core magnetic component for achieving compact switch mode power supply design.
The core function of this transformer is to achieve efficient energy conversion and electrical isolation. Specifically, its functions include:
1. Energy transmission and voltage conversion (core function): In flyback switching power supply circuits, it serves as the core energy storage and discharge component. When a high-frequency pulse current is applied to the primary coil, the transformer stores electrical energy in the form of a magnetic field; When the switch tube is closed, the secondary coil converts the magnetic energy into the required low voltage (or high voltage) electrical energy and releases it to the load, thereby achieving the conversion from AC to DC or different DC voltages.
2. Electrical isolation (safety critical): Its physical structure achieves complete electrical isolation between the input side (primary) and output side (secondary) circuits. This greatly enhances the safety of the system, preventing high voltage from entering the low voltage side and damaging equipment or causing electric shock hazards to the human body, while also effectively suppressing common mode interference.
3. Impedance matching and power limitation: Its nominal capacity of 2.5VA (volt ampere) specifies the limit of its designed transmission power, ensuring stable, efficient, and low-temperature operation of the transformer at rated power without damage due to overload, naturally limiting the maximum output power of the circuit.
4. * * High frequency operation * *: Designed specifically for high-frequency switching frequencies (usually ranging from tens of kHz to hundreds of kHz), it achieves miniaturization, lightweight, and high efficiency of power supply devices compared to power frequency transformers.
**In summary, its function is to safely and efficiently transfer high-frequency electrical energy from the primary side to the isolated secondary side in a compact space, and provide precise matching, power limited voltage to the load. **It is an indispensable energy transfer hub and safety isolation barrier in modern miniaturized switch mode power supplies (SMPS).
| Feature Category | Specification / Description | Benefit / Implication |
| Core Type & Size | EI-13, Stacked Thickness 15mm | Standardized, compact footprint for easy PCB mounting and integration into small form-factor designs. |
| Power Rating | 2.5VA (Volt-Ampere) | Defines the maximum apparent power it can handle, ensuring safe operation within its thermal and magnetic limits. |
| Topology | Flyback (SMPS) | Ideal for low-power, cost-effective switching power supply designs with multiple output voltage requirements. |
| Operating Frequency | High Frequency (Typ. 20kHz - 250kHz+) | Enables significant miniaturization compared to 50/60Hz transformers, leading to smaller and lighter power supplies. |
| Primary Inductance (Lp) | Custom value (e.g., 2.5mH ±10%) @ 1kHz | A critical design parameter that, in conjunction with frequency, determines the energy transfer per switching cycle. |
| Leakage Inductance | Minimized by design and winding technique | Improves efficiency, reduces voltage spike stress on the main switch (MOSFET), and enhances overall regulation. |
| Isolation Voltage | High Isolation (e.g., 3.1kV AC / 60s) | Provides critical safety protection between primary and secondary circuits, preventing electric shock and protecting users. |
| Winding Material | High-Quality Enameled Copper Wire | Low resistivity minimizes copper losses (I²R losses), improving efficiency and thermal performance. |
| Insulation Class | Class B (130°C) or higher | Ensures reliable operation and long service life at elevated temperatures commonly found in SMPS environments. |
| Regulation | Good (Load & Line) | Provides a stable output voltage despite variations in input voltage or output load current. |
| Efficiency | High (Typ. >85%) | Minimizes power loss as heat, allowing for higher power density and cooler operation of the end product. |
| Applications | AC/DC Adapters, Smart Home Devices, LED Drivers, Auxiliary Power Supplies (UPS, Industrial Controls), Battery Chargers. | A versatile component for a wide range of low-power electronic equipment requiring isolated DC power. |
