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{"title":"PQ2020 PQ2625 PQ3230 PCB Mount High Frequency Transformer For SMPS And Inverter","imgUrl":"https:\/\/img.chinax.com\/nimg\/51\/89\/4980b8d672421931e53be176c007-200x200-1\/pq2020_pq2625_pq3230_pcb_mount_high_frequency_transformer_for_smps_and_inverter.jpg","attrs":{"Certification":"UL\/ISO9001\/ISO14001\/RoHS\/Reach","Operating frequency":"20kHz - 100kHz","Model Number":"PQ2020 PQ2625 PQ3230","Efficiency":"85% - 95%"}}
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{"title":"EF20 12V 24V 25W Flyback Transformer For LED Driver And Medical Power Supply","imgUrl":"https:\/\/img.chinax.com\/nimg\/66\/01\/8df53194d09044fe18fd98290bf9-200x200-1\/ef20_12v_24v_25w_flyback_transformer_for_led_driver_and_medical_power_supply.jpg","attrs":{"Model Number":"EF20","Frequency":"1KHz-1MHz","Minimum Order Quantity":"1000","Delivery Time":"3-4 Weeks"}}
{"title":"Small Power 220V 12V EFD15 High Frequency Flyback Transformer For LED Driver","imgUrl":"https:\/\/img.chinax.com\/nimg\/e6\/1c\/d9855adf7d4abb16dce957153071-200x200-1\/small_power_220v_12v_efd15_high_frequency_flyback_transformer_for_led_driver_converters.jpg","attrs":{"Certification":"UL\/ISO9001\/ISO14001\/RoHS\/Reach","Dimensions":"30mm x 30mm x 20mm","Model Number":"EFD15","Input voltage":"85V - 265V AC"}}
High Frequency EE16 Ferrite Core 12V 10W Flyback Transformer for LED Driver and Small Home Appliances
Product Introduction
The EE16 High-Frequency Transformer is a versatile and highly economical magnetic component, widely recognized as a "workhorse" in the low-power electronics industry. Designed for Switch Mode Power Supply (SMPS) topologies, the EE16 is optimized for power outputs ranging from 5W to 15W. Featuring a standard E-core ferrite geometry, it provides a stable and efficient platform for designers looking to balance performance and production costs in high-volume electronic manufacturing.
Parameter
Typical Value / Spec
Core Type
EE16 (Ferrite Core)
Mounting Type
Vertical / Horizontal PCB Mount
Pin Count
6-Pin / 8-Pin / 10-Pin (Customizable)
Dimensions
Approx. 16.5mm x 16.0mm x 12.5mm
Power Output
5.0W - 15.0W (Typical)
Operating Frequency
20KHz - 200KHz
Input Voltage
85V - 265V AC (Wide Range)
Hi-Pot (Isolation)
3.0KV AC / 1min
Insulation Resistance
>=100MΩ (at 500V DC)
Leakage Inductance
< 3% - 5% (Typical)
Core Material
PC40 / PC44 Mn-Zn Ferrite
Winding Wire
100% Pure Copper Wire
Insulation Class
Class B (130°C) / Class F (155°C)
Ae (Effective Area)
20.1 mm²
Operating Temp
-25°C to +110°C (Incl. Temp Rise)
Storage Temp
-25°C to +85°C
Compliance
RoHS, REACH, UL Recognized (Optional)
Product Features
Industry-Standard Geometry: The E-core design allows for simple and automated winding processes, ensuring high manufacturing throughput and consistent quality.
Wide Frequency Range: Engineered to operate efficiently at frequencies between 20kHz and 200kHz, making it compatible with a broad range of standard power controller ICs.
Flexible Bobbin Options: Available in both Vertical and Horizontal orientations, allowing for low-profile designs or minimized PCB footprint as required by the application.
High-Grade Materials: Utilizes high-permeability Mn-Zn ferrite cores (such as PC40 or PC44) and 100% pure enameled copper wire to ensure high saturation flux density and low power loss.
Multiple Pin Configurations: The standard EE16 bobbin supports up to 10 pins (5+5), accommodating primary, secondary, and auxiliary windings for comprehensive circuit control.
Product Applications
Small Home Appliances: The primary power solution for kitchen electronics (e.g., rice cookers, coffee machines), smart humidifiers, and air purifiers.
LED Lighting: Ideally suited as a step-down flyback transformer for LED drivers and smart lighting controllers.
Power Adapters & Chargers: Used in auxiliary power modules for communication equipment, routers, and low-wattage mobile device chargers.
Smart Meters: Provides isolated standby power for industrial meters and smart monitoring systems.
Product Advantages
Unrivaled Cost-Effectiveness: Due to its standardized design and global adoption, the EE16 is one of the most cost-competitive solutions for low-power applications.
Excellent Thermal Stability: The open structure of the E-core allows for natural convection cooling, ensuring stable electrical parameters even during continuous long-term operation.
High Reliability & Safety: Capable of withstanding high isolation voltages (up to 3kV AC) and meeting stringent international safety standards such as UL, CE, and RoHS.
Proven Design Consistency: The mature manufacturing process ensures minimal variance in leakage inductance and parasitic capacitance, reducing the need for complex tuning in mass production.
Company Strengths
Chipsen Electronics Technology Co., Ltd., established in 2000, is a specialized manufacturer of high frequency transformer, low frequency transformer, toroidal inductor, SMD power inductor, super high current inductor, choke coil and switch. Chipsen has got a good reputation in domestic and oversea markets which include North & South America, Europe and Southeast Asia.
Chipsen possesses a professional management team, as an ISO9001, ISO14001 & IATF16949 audited company, which always commits to producing environmental protection and qualified products. Our products are certified by UL Class B/Class F/Class H, CQC and RoHS, and obtained 21 patents. These achievements mainly come from our strong R&D team, providing various solutions for temperature decreasing, noise cancellation and coupled radiation conductivity. Our products widely used in various fields of new energy, PV, UPS, Robotics, smart home, security systems, health care and communication.
Vision: To Be Global Transformer Brand Supplier
Mission: Create Values for Customers and Society, Grow with Customers and Staffs
Q1: How do you optimize the EE16 transformer to minimize leakage inductance (Lk) in high-efficiency Flyback converter designs?
A: Minimizing leakage inductance is critical in EE16-based flyback designs to reduce voltage spikes across the primary MOSFET and improve overall efficiency. We achieve this through two primary methods:
Interleaving Winding (Sandwich Construction): By splitting the primary winding into two layers and placing the secondary winding between them, we significantly increase magnetic coupling. This can reduce Lk to less than 1-3% of the primary inductance.
Bobbin & Core Alignment: Ensuring the windings occupy the full width of the EE16 bobbin and maintaining tight tolerances between the E-core halves prevents flux leakage. For designs requiring higher safety margins, we use Triple Insulated Wire (TIW) for the secondary, allowing for tighter coupling without the need for bulky margin tapes.
Q2: What is the impact of selecting PC44 over PC40 ferrite material for EE16 cores in compact LED driver applications?
A: While both are Mn-Zn ferrites, PC44 offers distinct advantages for compact, high-ambient temperature designs like LED drivers.
Core Loss: PC44 exhibits significantly lower power loss (Pcv) at high temperatures (typically reaching its minimum loss at around 100°C) compared to PC40. This allows the EE16 transformer to run cooler or handle slightly higher power density without thermal runaway.
Saturation Flux Density (Bsat): PC44 has a higher Bsat at elevated temperatures, providing a better safety margin against core saturation during transient load conditions or start-up. For engineers, switching to PC44 means a more robust design with reduced risk of inductive heating and improved long-term reliability in unventilated enclosures.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2007
Total Annual:
28820000-29820000
Employee Number:
400~450
Ecer Certification:
Verified Supplier
Chipsen Electronics - Supplier to Fortune Global 500 Companies
Magnetic Components Engineered for Performance & Reliability
Founded in 2007, Dongguan Chipsen Electronics Technology Co., Ltd. is a professional manufacturer specializing in magnetic components and micro switches.
...
Chipsen Electronics - Supplier to Fortune Global 500 Companies
Magnetic Components Engineered for Performance & Reliability
Founded in 2007, Dongguan Chipsen Electronics Technology Co., Ltd. is a professional manufacturer specializing in magnetic components and micro switches.
...