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Compact Efficient EC39 HF Power Transformer Low DCR Stable Power Supplies
Place of Origin:
China
Brand Name:
CHIPSEN
Certification:
UL/cUL Class B/F/H, VDE, CQC
Model Number:
EC39
Minimum Order Quantity:
1K
Price:
＄8.5-11.8/pieces
Delivery Time:
7-14 work days (Negotiable)
Payment Terms:
T/T
Supply Ability:
10000pcs
Inquiry Now
Get A Quote
Specifications
Highlight Features
EC39 hf power transformer
,Low DCR hf power transformer
,500W high frequency transformer
Isolation Voltage:
3000V AC
Frequency Range:
20kHz - 500kHz
Input Voltage:
85V - 265V AC
Power Rating:
5W - 500W
Core Material:
Ferrite
Operating Temperature:
-40°C To +125°C
Product Description
Compact Efficient EC39 High Frequency Transformer
Low DCR Stable Power Supplies
Product Overview
The values below are common international buyer inquiry references and starting points for engineering discussion. They are not fixed or guaranteed ratings for every EC39 transformer. Final requirements are confirmed through the approved specification, drawing, material system, and customer sample-validation process.
| Industry | Typical Application | Typical Input Requirement | Typical Output Requirement | Typical Power Inquiry | Frequency | Key Parameters Evaluated | Safety and Environmental Focus | Available Customization |
|---|---|---|---|---|---|---|---|---|
| Industrial automation | Isolated SMPS power for PLC controllers drives and control boards | Switched excitation derived from 12 V 24 V or 48 V DC or a rectified AC bus | 5 V 12 V 15 V 24 V 36 V 48 V or multiple outputs | Approximately 15 W to 120 W | Commonly 30 kHz to 300 kHz | Inductance turns ratio leakage DCR peak current regulation EMI and temperature rise | Industrial insulation creepage clearance vibration and cabinet temperature | Gap winding sequence conductor shield pinout leads insulation and test limits |
| Emergency power and UPS | Battery converter auxiliary supply gate drive and charger control | Battery or high-voltage DC bus with customer-defined waveform | 12 V 15 V 24 V 48 V or multiple isolated rails | Approximately 30 W to 200 W | Commonly 30 kHz to 250 kHz | Peak current flux margin leakage DCR efficiency isolation and temperature rise | Continuous standby surge environment and thermal endurance | Low-loss material precision gap low-DCR winding multiple outputs and reinforced insulation |
| Energy storage systems | PCS auxiliary power BMS supply gate drive and controls | Battery or rectified high-voltage bus through the specified topology | Isolated control rails or application-specific power outputs | Approximately 30 W to 250 W | Commonly 40 kHz to 300 kHz | Capacitance isolation leakage DCR saturation margin EMI and thermal stability | High-voltage separation surge cabinet environment and traceability | Low-capacitance winding shield reinforced insulation foil leads and potting |
| Battery chargers | Main or auxiliary transformer for industrial chargers | 12 V to 72 V DC or rectified 85 V to 265 V AC depending on architecture | Customer-specified charging or auxiliary output | Approximately 30 W to 250 W | Commonly 40 kHz to 250 kHz | Inductance peak current leakage DCR regulation insulation and losses | Creepage clearance dielectric strength surge and thermal margin | Topology-specific gap turns ratio litz wire foil shield insulation and pin layout |
| Telecom and networking | Converter transformer for communication equipment | Common 24 V or 48 V DC bus or rectified-input converter | 5 V 12 V 24 V 48 V or multiple regulated rails | Approximately 20 W to 150 W | Commonly 50 kHz to 300 kHz | DCR leakage capacitance EMI regulation and footprint | Isolation EMC support cabinet temperature and reliability | Low-capacitance winding shield interleaving custom ratio pinout and leads |
| Data center power electronics | Server auxiliary converters and gate-drive circuits | PFC DC bus battery bus or auxiliary converter stage | Isolated housekeeping control or gate-drive rails | Approximately 20 W to 200 W | Commonly 50 kHz to 300 kHz | Leakage AC and DC resistance capacitance core loss and thermal path | Insulation coordination traceability and temperature cycling | Controlled leakage foil winding shield custom pins leads and test tolerances |
| EV charging equipment | Auxiliary SMPS control power and gate-drive power | Rectified mains DC link or low-voltage auxiliary bus | 12 V 15 V 24 V or multiple isolated outputs | Approximately 20 W to 200 W | Commonly 40 kHz to 250 kHz | Isolation leakage capacitance DCR peak current EMI and temperature rise | Charger insulation surge humidity vibration and traceability | Reinforced insulation shield low-capacitance winding custom leads and potting |
| Medical equipment | Power for diagnostic monitoring and laboratory subsystems | Customer-defined converter bus and switching waveform | Application-specific isolated outputs | Approximately 20 W to 150 W | Commonly 40 kHz to 250 kHz | Creepage clearance dielectric strength capacitance and temperature rise | Coordination with applicable medical end-equipment requirements | Reinforced insulation triple-insulated wire shield custom spacing and documented tests |
| HVAC and industrial controls | Drive auxiliary supply and motor-control electronics | Rectified mains DC link or 24 V to 48 V DC auxiliary bus | Control fan relay sensor or gate-drive outputs | Approximately 20 W to 150 W | Commonly 30 kHz to 250 kHz | Saturation margin DCR leakage regulation EMI and vibration resistance | Industrial temperature humidity surge and pollution degree | Multi-output design shield gap leads potting and mechanical reinforcement |
Major customizable parameters include converter topology, input-voltage range, output voltage and current, operating power, switching frequency, duty cycle, primary inductance, turns ratio, air gap, peak current, saturation margin, leakage inductance, DCR, interwinding capacitance, ferrite material, conductor system, winding sequence, shielding, insulation, dielectric strength, creepage, clearance, pin assignment, flying leads, dimensions, temperature rise, marking, and production tests.
Product Description
The EC39 is a high-frequency ferrite transformer platform intended for switched-mode power supplies, isolated DC DC converters, auxiliary power, battery chargers, gate-drive supplies, industrial power electronics, and other high-frequency conversion applications.
The supplied image shows a taped EC-core transformer mounted on a multi-pin through-hole bobbin with several flying leads. The visible construction supports PCB mounting together with external lead connections. Exact pin count, lead functions, core material, winding arrangement, and dimensions must be confirmed by the approved drawing.
EC39 identifies the approximate magnetic platform and does not define a universal power, voltage, current, frequency, or insulation rating. Final capability depends on:
- Converter topology
- Input-voltage range
- Switching waveform and frequency
- Duty cycle
- Flux-density limit
- Ferrite material
- Air gap
- Winding arrangement
- Conductor size
- Rectification method
- Allowable losses
- Cooling conditions
- Ambient temperature
- Insulation requirements
- Permitted temperature rise
Required development information includes topology, minimum and maximum input voltage, switching frequency, duty cycle, output voltage and current, primary inductance, turns ratio, peak and RMS current, leakage and DCR limits, capacitance target, isolation voltage, creepage and clearance, ambient temperature, cooling, dimensions, pins, flying leads, and test requirements.
Product Construction
| Construction Item | EC39 Customization Reference |
|---|---|
| Magnetic platform | EC39 ferrite-core platform or approved equivalent selected according to frequency flux density losses and thermal requirements |
| Core material | High-frequency ferrite grade selected according to waveform frequency temperature and loss target |
| Bobbin | Multi-pin through-hole bobbin selected for winding space pin layout creepage clearance and PCB mounting |
| Pin configuration | Multiple PCB pins are visible but exact count pitch and assignment require drawing confirmation |
| Flying leads | Insulated flying leads with customizable gauge rating length color stripping connectors and electrical functions |
| Winding conductor | Enameled wire parallel conductors litz wire copper foil or triple-insulated wire |
| Winding arrangement | Layered interleaved sectional bifilar or separated structure |
| Insulation system | Bobbin tape margin barriers sleeving triple-insulated wire and lead insulation |
| Shielding | Optional electrostatic shield flux band or shield winding |
| Air gap | Ungapped distributed-gap or precision center-gap construction |
| Core fixing | Tape adhesive clamp or approved bonding process |
| Impregnation and potting | Varnish partial potting or encapsulation according to thermal and environmental requirements |
| Traceability | Custom model winding identification date code lot code and customer label |
Final core outline, bobbin dimensions, height, pin pitch, PCB footprint, lead length, and tolerances must be confirmed by the approved drawing.
Product Characteristics
High Frequency Power Conversion: The EC39 platform can support flyback, forward, push-pull, half-bridge, full-bridge, resonant, and other customer-specified topologies when developed for the actual waveform and operating conditions.
Application Specific Electrical Design: Primary inductance, turns ratio, air gap, conductor system, and winding sequence can be developed around the customer's input range, output requirements, peak current, switching frequency, losses, and thermal objectives.
Low DCR and Winding Loss Options: Conductor diameter, parallel wire, litz wire, copper foil, winding length, and terminal arrangement can be reviewed to reduce DC and AC winding losses within the available winding window.
Controlled Leakage and Capacitance: Interleaving can reduce leakage inductance, while separated windings and insulation barriers can reduce capacitance or increase safety spacing. The final structure must balance these potentially conflicting objectives.
EMI Oriented Construction: Winding sequence, electrostatic shielding, interwinding capacitance, return paths, and terminal orientation can be adjusted to support EMC optimization. Compliance must be verified in the complete converter.
Multiple Output Capability: Multiple secondary and auxiliary windings may be developed when winding space, cross-regulation, insulation, and thermal limits permit.
Thermal and Mechanical Stability: Ferrite loss, copper loss, proximity effect, skin effect, air gap, core fixing, ambient temperature, airflow, duty cycle, and enclosure conditions are reviewed together.
Applications
- Industrial switched-mode power supplies
- PLC and automation control power
- Emergency-power and UPS converters
- Energy-storage PCS auxiliary power
- Battery-management-system supplies
- Industrial battery chargers
- Isolated DC DC converter modules
- EV charging equipment
- Isolated gate-drive power supplies
- Telecom and networking converters
- Data-center auxiliary power
- HVAC and variable-speed-drive electronics
- Medical equipment power supplies
- Robotics and industrial machinery
- Multiple-output flyback and forward converters
- Half-bridge full-bridge and resonant converters
Suitability must be confirmed according to the actual electrical, thermal, mechanical, environmental, and safety conditions.
Quality Control
Incoming Material Inspection: Inspection may cover ferrite cores, bobbins, copper wire, litz wire, foil, insulation tape, sleeving, leads, terminals, shielding materials, adhesives, potting compounds, labels, and supplier documentation.
Design Review: Engineering review can evaluate topology, frequency, volt-second conditions, flux density, inductance, peak current, saturation margin, core loss, turns ratio, conductor selection, winding fill, leakage, capacitance, DCR, insulation, creepage, clearance, and temperature rise.
In Process Control: Controls may include turns counting, winding direction, sequence, tension, conductor arrangement, insulation placement, lead routing, pin soldering, shield installation, core gap, core assembly, fixing, impregnation, potting, and workmanship inspection.
Electrical Testing: Tests may include:
- Inductance
- Turns ratio and polarity
- Winding DCR
- Leakage inductance
- Dielectric strength
- Insulation resistance
- Interwinding capacitance
- Shorted-turn screening
- Functional converter testing
Test frequency, voltage, bias, limits, duration, sampling level, and testing frequency must follow the approved test plan.
Mechanical Inspection: Inspection may cover core and bobbin outline, package height, pin pitch, alignment, terminal condition, lead length, lead color, stripping, connectors, labels, core fixing, and PCB-footprint compatibility.
Sample Validation: Samples should be tested in the customer's converter across minimum and maximum input, no load, full load, switching-frequency range, startup, transient, fault, ambient temperature, and cooling conditions.
Validation may include waveforms, peak current, flux margin, regulation, efficiency contribution, temperature rise, EMI behavior, and insulation testing.
Traceability: Material lots, ferrite batches, winding batches, gap records, test results, and engineering changes can be controlled according to approved project requirements.
Product Image
Important Note: The EC39 model or ferrite-core platform does not by itself define a fixed power, voltage, current, frequency, insulation, or thermal rating. Final performance is confirmed only through the approved drawing, electrical specification, material system, test plan, and customer sample-validation process.
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