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Low Leakage High Power EE65 High Frequency Transformer Energy Systems
Place of Origin:
China
Brand Name:
CHIPSEN
Certification:
UL/cUL Class B/F/H, VDE, CQC
Model Number:
EE65
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
EE65 high frequency transformer
,low leakage planar transformer
,high power energy systems transformer
Output Current:
50A - 150A
Installation:
SMD LEAD
Isolation Voltage:
Typically 1500V Or Higher
Core Material:
PC40 / PC44 Ferrite
Frequency Range:
200 KHz To 700 KHz
Pad Size:
23.5*19.5mm
Operation Temperature:
-40℃ To +125℃
Customization:
OEM / ODM Accepted
Leakage Inductance:
< 0.2% To 0.5% Of Primary Inductance
Customize Design:
Available For OEM Projects
Core Type:
EE65 Ferrite Core
Powerrating:
Varies By Model
Frequencyrange:
Up To MHz Range
Clearance Distance:
≥ 6.0mm
Power:
180W
Product Description
Low Leakage High Power EE65 High Frequency Transformer Energy Systems
The values below are common international buyer inquiry references and starting points for engineering discussion. They are not fixed or guaranteed ratings for every EE65 transformer. Final electrical, magnetic, insulation, thermal, mechanical, environmental, and test requirements are confirmed through the approved specification, drawing, material system, converter conditions, and customer sample-validation process.
| Industry | Typical Application | Typical Converter Input Condition | Typical Output Requirement | Typical Power Inquiry | Common Switching Frequency Inquiry | Key Parameters Evaluated by Buyers | Available Customization |
|---|---|---|---|---|---|---|---|
| Energy storage systems | Bidirectional isolated DC DC stage for PCS battery interface and auxiliary conversion | High-frequency switched waveform derived from a 48 V to several-hundred-volt battery or DC link | Isolated battery-side DC-link or auxiliary rail after rectification and filtering | Approximately 300 W to 3000 W as an engineering discussion range | Commonly 20 kHz to 200 kHz | Flux balance magnetizing inductance leakage DCR AC resistance capacitance isolation efficiency contribution and hotspot temperature | Turns ratio precision gap foil or litz winding symmetric construction shields busbars sensors insulation and cooling interface |
| Solar and wind power | Isolated conversion for inverter DC links optimizers and renewable-energy power modules | Switched waveform derived from a wide-range renewable-energy DC bus | Customer-defined isolated DC link battery interface or auxiliary output | Approximately 300 W to 3000 W as an inquiry reference | Commonly 20 kHz to 200 kHz | Wide-input flux density saturation margin leakage winding loss core loss insulation and thermal cycling | Ferrite grade gap interleaving reinforced insulation low-capacitance winding leads busbars potting and thermal sensors |
| EV charging equipment | Main or auxiliary isolated converter in onboard offboard and charging-station power modules | High-frequency bridge or resonant waveform derived from a PFC bus battery bus or auxiliary supply | Isolated charging bus control rail or service output after the converter power stage | Approximately 300 W to 3000 W as a project starting point | Commonly 30 kHz to 250 kHz | Controlled leakage resonant behavior AC loss capacitance dielectric strength temperature rise and repeatability | LLC-oriented leakage target interleaving foil litz shield reinforced insulation terminals busbars potting and mounting |
| Emergency power and UPS | Battery converter inverter charger and high-power auxiliary stage | Switched waveform derived from 24 V 48 V 72 V 96 V or a customer-defined DC link | Isolated high-voltage or low-voltage rail according to the inverter architecture | Approximately 300 W to 2500 W as an inquiry reference | Commonly 20 kHz to 180 kHz | Peak current saturation margin DCR leakage loss thermal balance startup stress and isolation | Center tap parallel conductors copper foil litz precision gap shields thermal protection leads and mechanical reinforcement |
| Data center and AI power | Isolated intermediate-bus converter server supply and high-density power module | Switched waveform derived from a 48 V bus or high-voltage PFC link | High-current isolated bus such as 12 V 24 V 48 V or a customer-defined rail | Approximately 300 W to 2500 W as an engineering reference | Commonly 50 kHz to 300 kHz | Low leakage low AC and DC resistance capacitance core loss thermal path efficiency contribution and consistency | Low-profile winding arrangement foil litz interleaving custom terminals busbars core fixing and tightened test limits |
| Industrial power supplies | Main transformer for high-power isolated AC DC and DC DC converters | Switched excitation derived from rectified mains a PFC link or a customer-defined DC bus | Single dual or multiple isolated outputs after rectification and regulation | Approximately 200 W to 2000 W as an inquiry reference | Commonly 20 kHz to 250 kHz | Volt-second balance primary inductance turns ratio leakage DCR AC loss insulation and temperature rise | Ferrite material air gap conductor system winding sequence shields multiple outputs insulation terminals and cooling |
| Industrial battery charging and formation | Isolated conversion for chargers cyclers formation racks AGVs and stationary battery systems | Switched waveform derived from rectified mains or a low- or high-voltage battery bus | Customer-specified charging voltage and current after rectification and control | Approximately 300 W to 3000 W as a common discussion range | Commonly 20 kHz to 180 kHz | RMS and peak current flux balance copper loss leakage regulation isolation and thermal endurance | Full-wave or center-tapped secondary foil litz parallel wire busbars thermal sensor insulation and impregnation |
| Welding plasma and industrial heating | High-current isolated power conversion and pulsed-energy transfer | Bridge push-pull or customer-defined high-frequency excitation with a documented duty profile | High-current or high-voltage output according to the downstream rectifier and load | Approximately 500 W to several kilowatts as an initial inquiry only | Commonly 20 kHz to 150 kHz | Pulse current saturation core loss proximity loss termination heating insulation and mechanical strength | Heavy copper foil parallel windings busbars reinforced terminations gap core clamping insulation and forced-cooling interface |
| Telecom and communications power | Isolated DC DC stage for rectifiers base stations network power and backup systems | High-frequency switched waveform derived from a nominal 48 V bus or PFC link | Isolated regulated intermediate or point-of-load bus | Approximately 200 W to 2000 W as an inquiry reference | Commonly 50 kHz to 300 kHz | DCR AC resistance leakage capacitance EMI core loss thermal path and production consistency | Foil or litz construction interleaving shields compact terminals busbars low-profile mounting and traceability |
The transformer is excited by a high-frequency switched or pulsed waveform generated by the converter. The DC-bus values in the matrix describe the source system and do not mean that unswitched DC can be applied directly to the transformer winding.
Major customizable parameters include converter topology, minimum and maximum bus voltage, winding waveform, switching frequency, duty cycle, continuous and peak power, turns ratio, magnetizing inductance, magnetizing current, air gap, peak and RMS winding current, flux-density limit, saturation margin, leakage-inductance target, DCR, AC winding resistance, interwinding capacitance, core material, copper foil, litz wire, parallel-wire construction, winding sequence, electrostatic shield, insulation system, dielectric test level, creepage, clearance, terminals, leads, copper tabs, busbars, mounting, impregnation, potting, temperature sensing, cooling method, temperature-rise limit, marking, and production-test criteria.
Product Overview
The EE65 is a large ferrite-core high-frequency transformer platform intended for isolated power conversion in energy-storage systems, solar and wind equipment, EV chargers, industrial UPS systems, data-center power supplies, battery chargers, industrial converters, and other demanding power-electronics applications.
The supplied image presents the product around two clearly readable design themes: extremely low leakage inductance and outstanding heat-dissipation efficiency. These statements are treated as development objectives rather than universal guaranteed values. The exact leakage limit, test frequency, winding condition, cooling environment, temperature-rise limit, and acceptance method must be defined in the approved specification.
EE65 identifies an approximate core-size platform and does not define one fixed voltage, current, power, frequency, inductance, leakage, isolation, or thermal rating. Final capability depends on:
- Converter topology and switching waveform
- Minimum and maximum bus voltage
- Switching frequency and duty cycle
- Ferrite grade and permitted flux density
- Magnetizing inductance and air gap
- Peak RMS and ripple current
- Turns ratio and winding arrangement
- Conductor material geometry and termination
- Leakage-inductance and capacitance targets
- Insulation system and safety spacing
- Core and copper loss
- Cooling method and ambient temperature
- Mounting orientation and enclosure conditions
- Permitted winding core and hotspot temperature
Product Construction
| Construction Item | EE65 Customization Reference |
|---|---|
| Magnetic platform | EE65 ferrite-core platform or an approved equivalent selected according to waveform frequency flux density core loss window utilization and thermal requirements |
| Ferrite material | Power ferrite grade selected according to switching frequency waveform temperature core-loss target and availability |
| Core gap | Ungapped distributed-gap or precision-gapped construction developed around magnetizing inductance peak current stored energy and saturation margin |
| Bobbin or winding former | Standard bobbin split bobbin custom former or bobbinless construction selected according to winding window insulation and mechanical needs |
| Primary winding | Single split parallel center-tapped or multi-section primary according to topology current waveform and leakage target |
| Secondary winding | Single dual center-tapped parallel multiple-output or high-current low-voltage secondary according to rectification and regulation requirements |
| Winding conductor | Round enameled copper wire parallel multi-strand wire litz wire copper foil flat copper or a combined conductor system |
| Winding arrangement | Layered interleaved sandwich sectional or separated winding structure developed around leakage capacitance isolation and thermal priorities |
| Insulation system | Film tape barriers sleeving margin construction spacers and lead insulation selected according to working voltage dielectric test and thermal class |
| Electrostatic shielding | Optional primary-to-secondary shield with a defined grounding termination where common-mode-noise control is required |
| External magnetic shielding | Optional flux band or approved magnetic shielding where stray-field performance requires additional control |
| Terminations | PCB pins flying leads copper tabs lugs terminals connectors or busbars selected according to current assembly clearance and serviceability |
| Core retention | Tape adhesive clamp bracket or customer-approved fixture developed for gap stability vibration transport and production handling |
| Impregnation and potting | Varnish partial potting full encapsulation or thermally conductive compound considered according to insulation vibration moisture and thermal requirements |
| Cooling interface | Natural convection forced air cold plate thermal pad chassis conduction or customer-defined cooling arrangement |
| Temperature monitoring | Optional thermostat thermistor RTD or another sensor positioned according to the approved thermal-validation plan |
| Marking and traceability | Custom model winding identification polarity marks date code lot code test status and customer label under the approved control plan |
Product Characteristics
Low Leakage Inductance Development
Leakage inductance can be reduced through winding interleaving, shorter current paths, controlled layer placement, close magnetic coupling, consistent winding tension, and optimized termination geometry.
Balanced Leakage Capacitance and Isolation
Maximum coupling is not always the correct solution. Aggressive interleaving may reduce leakage while increasing interwinding capacitance and insulation complexity.
Heat Dissipation Oriented Design
Conductor cross-section, winding fill, layer distribution, termination area, insulation thermal conductivity, core contact, airflow path, potting material, chassis interface, and sensor position can be reviewed as one thermal system.
High Current Conductor Options
Copper foil, litz wire, flat copper, parallel conductors, multi-strand wire, copper tabs, and busbar terminations may be considered to manage RMS current, DCR, skin effect, proximity loss, current sharing, and termination temperature.
Core and Copper Loss Control
Ferrite grade, flux swing, frequency, waveform, gap, conductor strand size, foil thickness, turns count, winding length, layer arrangement, and current harmonics all affect total loss.
High Power Density Potential
The EE65 platform provides a substantial magnetic cross-section and winding window for medium- and high-power conversion projects.
Applications
- Energy-storage PCS and bidirectional battery converters
- Solar inverters and renewable-energy power modules
- Wind-power converter systems
- EV charging equipment and isolated charger stages
- Industrial UPS and emergency-power converters
- Data-center server and AI power systems
- High-density isolated DC DC converters
- Industrial high-power switched-mode power supplies
- Battery chargers formation racks and test equipment
- Telecom rectifiers and communications power systems
- Industrial motor drives and robotics
- Welding plasma and industrial heating equipment
- Railway marine and transportation power electronics
- Isolated gate-drive and auxiliary power systems
- Full-bridge half-bridge push-pull forward and resonant converters
- Customer-specific high-frequency isolation and energy-transfer systems
Suitability for any application must be confirmed according to the actual circuit topology, switching waveform, electrical stress, insulation coordination, thermal environment, mechanical installation, applicable standards, and customer validation conditions.
Quality Control
Incoming Material Inspection: Incoming inspection may cover ferrite cores, bobbins, winding formers, copper foil, litz or multi-strand wire, insulation films, tape, barriers, sleeving, terminals, tabs, busbars, adhesives, varnish, potting compounds, thermal materials, sensors, clamps, brackets, labels, and supplier documentation according to the approved control plan.
Design Review: Engineering review can evaluate topology, bus range, switching frequency, duty cycle, volt-second conditions, flux density, magnetizing inductance, peak current, saturation margin, core loss, turns ratio, conductor selection, skin and proximity effects, winding fill, leakage inductance, capacitance, DCR, AC resistance, insulation, creepage, clearance, dielectric test, hotspot temperature, cooling, mounting, and production tolerances.
In Process Control: Process controls may include turns counting, winding direction, start and finish identification, conductor preparation, parallel-path arrangement, foil insulation, winding sequence, layer placement, winding tension, interlayer insulation, margin control, lead routing, terminal joining, shield installation, gap control, core assembly, clamping, sensor placement, impregnation, potting, curing, labeling, and workmanship inspection.
Electrical Testing: Tests may include magnetizing or primary inductance, leakage inductance under the approved winding condition, turns ratio and polarity, winding DCR, shorted-turn screening, dielectric strength, insulation resistance, interwinding capacitance where specified, quality factor or impedance where relevant, partial-discharge testing when required by the project, core-loss or no-load characterization under an agreed waveform, temperature-rise and hotspot validation, and functional converter testing when included in the approved plan.
Why Choose Chipsen
Application Specific Customization
The EE65 can be developed around topology, bus-voltage range, switching frequency, power profile, current waveform, turns ratio, inductance, leakage, capacitance, conductor system, insulation, cooling, terminals, mounting, and operating environment.
Low Leakage Engineering Support
Winding interleaving, layer arrangement, coupling area, termination geometry, insulation spacing, capacitance, and manufacturability can be reviewed together to develop a controlled leakage-inductance target.
Thermal Design Collaboration
Core loss, copper loss, winding hotspots, terminal heating, airflow, conduction cooling, potting, sensor location, and enclosure conditions can be evaluated as a complete thermal path before production approval.
OEM and ODM Support
Support is available for new designs, approved-specification builds, drawing-based manufacturing, sample-based replacement development, and application-based engineering review.
Engineering Collaboration
Engineering discussions can address magnetizing inductance, turns ratio, leakage, DCR, AC resistance, air gap, conductor system, capacitance, EMI, saturation margin, insulation, hotspots, cooling, terminals, mounting, and test limits.
Controlled Specification Process
The approved drawing, circuit conditions, electrical specification, material system, sample-validation results, and test plan form the basis for production control and engineering-change management.
Frequently Asked Questions
Does EE65 define a fixed power rating?
No. EE65 identifies an approximate ferrite-core platform. Power capability depends on topology, bus range, waveform, switching frequency, flux density, conductor design, insulation, cooling, ambient temperature, and permitted temperature rise.
No. EE65 identifies an approximate ferrite-core platform. Power capability depends on topology, bus range, waveform, switching frequency, flux density, conductor design, insulation, cooling, ambient temperature, and permitted temperature rise.
What information is required for quotation?
Please provide the schematic or topology, minimum and maximum bus voltage, switching frequency, duty cycle, winding waveforms, output voltage and current, continuous and peak power, turns ratio, inductance, current levels, leakage and resistance limits, capacitance target, isolation, cooling, dimensions, terminals, annual demand, and required tests.
Please provide the schematic or topology, minimum and maximum bus voltage, switching frequency, duty cycle, winding waveforms, output voltage and current, continuous and peak power, turns ratio, inductance, current levels, leakage and resistance limits, capacitance target, isolation, cooling, dimensions, terminals, annual demand, and required tests.
Can unswitched DC be applied directly to the transformer?
No. A high-frequency transformer requires an alternating or pulsed voltage with controlled volt-second balance. A converter switching stage must generate the specified excitation waveform.
No. A high-frequency transformer requires an alternating or pulsed voltage with controlled volt-second balance. A converter switching stage must generate the specified excitation waveform.
Which converter topologies can be supported?
Full-bridge, half-bridge, push-pull, forward, phase-shifted, resonant, bidirectional, and other customer-specified topologies may be considered. The transformer must be designed for the selected waveform and control method.
Full-bridge, half-bridge, push-pull, forward, phase-shifted, resonant, bidirectional, and other customer-specified topologies may be considered. The transformer must be designed for the selected waveform and control method.
Can leakage inductance be minimized?
Yes. Winding placement, interleaving, layer structure, coupling area, insulation thickness, lead routing, and termination geometry can be developed around a specified leakage target.
Yes. Winding placement, interleaving, layer structure, coupling area, insulation thickness, lead routing, and termination geometry can be developed around a specified leakage target.
The EE65 model, ferrite-core platform, low-leakage positioning, or heat-dissipation positioning does not by itself define a fixed power, voltage, current, frequency, inductance, leakage, insulation, efficiency, or thermal rating. Final performance is confirmed only through the approved drawing, electrical specification, converter conditions, material and insulation systems, test plan, and customer sample-validation process.
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