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Transformers

Exxelia excels in designing and manufacturing transformers tailored for DC/DC converters, Standard network frequency 50/60Hz, switch mode power supplies (SMPS), and 400Hz power supplies integral to aircraft electrical systems, as well as for inverters and chargers. Our expertise allows for the creation of products that minimize weight, footprint, and losses, optimizing performance across applications.

 

Our power transformers for SMPS utilize advanced technology packages, including Exxelia technology platforms SESI, CCM25, standard and specific package using (ferrite, nanocrystalline, cores, available in both through-hole, surface-mount and device (SMD) configurations. These transformers are engineered to meet the rigorous demands of aerospace, railways, defense, medical and energy sectors, ensuring reliability and efficiency in critical applications. Specialized designs include SMPS Transformers: Flyback, Forward, Push Pull, Half Bridge, Full Bridge, Dual Active Bridge, DAB, LLC transformers, resonant, and Pulse Transformers: Gate Drive Transformers, Data Bus 1553.

 

Exxelia also specializes in high-power and high-voltage magnetics designed for demanding environments in mass-transit, railway, and premium industrial applications. These magnetics are crafted to offer superior performance under the most challenging conditions. Current Transformers High Accuracy are a key offering.

 

Furthermore, Exxelia produces a range of data transformers for communication buses and data transmission networks, crafted to endure harsh conditions while complying with the MIL-STD 1533 standard. Available in both SMD and through-hole packages, these transformers meet stringent military specifications.

 

In addition to our extensive transformer and inductor offerings, Exxelia provides solutions that emphasize volume and weight reduction, alongside enhanced heat dissipation. Our innovative cooling techniques, including direct and indirect fluid cooling or cold plate systems, ensure that our products deliver superior performance while maintaining operational efficiency and reliability in demanding applications. Multi Pulse Transformer for “400Hz” & Power Supply and 50/60 Hz Transformer for Niche Markets are examples of our specialized solutions.

Frequently Asked Questions

Find answers to the most frequently asked questions about our products and services.
What is a transformer ?

A transformer’s function is to change the entry current/voltage level to another level while keeping the same power.

Electrical Functions

  • Voltage transformation : V1 → V2 
  • Isolation
  • Measurement

 

Example : 

SMPS Transformers : Flyback, Forward, Push Pull, Half Bridge, Full Bridge, Dual Active Bridge, LLC transformers.
Pulse Transformers

  • Gate Drive Transformers
  • Data Bus 1553

     

Current  Transformers

Multi Pulse Transformer for “400Hz” Power Supply 
50/60 Hz Transformer for Niche Markets
 

Why are DAB and LLC converters crucial?
  • High Power Applications: Essential for electric & hybrid vehicles (airplane, EVTOL, buses, heavy vehicles, off-road), energy storage systems and Smart Grid distribution networks.
  • High Efficiency: Maximizes energy performance and reduces losses.
  • High Frequency Operation: More compact and lighter designs for easy integration.
  • Compatibility with SiC and GaN: Take advantage of the latest generation semiconductors for optimal performance.
  • Bidirectional Transfer: Essential for modern systems requiring reversible power transfers.
  • Reduced EMI: Improved electromagnetic compatibility for reliable operation.
Why choose Exxelia's Smart Magnetic technology?
  • Miniaturization: Design smaller systems without sacrificing performance.
  • Thermal and loss management: Reduce losses and thus thermal to improve sustainability and efficiency.
  • Balancing Effectiveness and Cost: Finding cost-effective solutions while maximizing efficiency.
  • Guaranteeing an integrated component (choke + transformer), whatever the inductance value! : More compact + Better EMC performance.
  • Components with optimal performance: Efficiency >99% even at high frequency.
  • Products with controlled costs: Guaranteeing simpler integration favoring optimized system costs.
  • Offering better thermal management: Components designed to manage and dissipate heat efficiently.
Magnetics : How Exxelia supports the key processes ?

Cleaning procedure 

The cleaning of the PCB boards is evolving from solvent (as isopropylic alcohol,...) to highly alkaline water based cleaning medium. EXXELIA has performed an extensive study to offer robust technologies to withstand these current cleaning processes. The qualification procedure has included thermal shock, burn in and mechanical testings. EXXELIA has defined gluing, marking, varnishing processes that allow the products to go through more than 5 cleaning cycles and operating up to 180°C. 

Processes compliant to ESA and NASA outgassing standards have also been defined for products specified up to 140°C. 

 

Wire integrity 

EXXELIA has qualified specific processes to ensure wire integrity for better insulation. The wire undergoes mechanical, chemical and thermal stresses during the winding and cabling process steps. EXXELIA has set up a dedicated process to reduce the impact of these manufacturing steps and improve the overall reliability of the wires and products. 

 

Finishing 

EXXELIA offers several types of components: Surface Mounted Device, Through Hole or lead terminations products, system integrated components. 

 

Packaging 

Products are available on trays and, upon request, on reels for easy pick and place, ESD compliant EXXELIA products offer components compliant to IPC/JEDEC standard J-STD- 020 with TP = 260°C and tP = 30 seconds. 

Are Exxelia's magnetic components compliant with industry standards?

Yes, Exxelia's magnetic components are designed and manufactured to meet or exceed industry standards and certifications, including RoHS, REACH, and MIL-STD.

What quality certifications does Exxelia hold?

Exxelia is certified EN 9100, a quality standard specific to the aerospace, space, and defense sectors. Our facilities are also ISO 9001 certified (quality management), and some are certified ISO 13485 for medical devices. Other industry-specific standards, such as NADCAP or AQAP, may also apply depending on the products and markets.

Why is EN 9100 certification important for the aerospace and space sectors?

The EN 9100 standard ensures a rigorous quality management system tailored to the critical requirements of the aerospace, space, and defense industries. It is required by major OEMs such as Airbus, Safran, Thales, or CNES. This certification guarantees product traceability, risk management, and compliance with international standards.

Are your components certified for use in medical devices?

Yes, some of our facilities are ISO 13485 certified, the quality standard for medical devices. This certification enables Exxelia to design and manufacture components (such as coils, sensors, or capacitors) used in high-reliability medical equipment, including MRI scanners, ventilators, and imaging systems.

What benefits do your certifications bring to the railway sector?

The railway industry demands durability, reliability, and long service life. While a dedicated certification like EN 9100 is not required, Exxelia applies IRIS standards and complies with IEC/EN regulations specific to railway applications. Our quality processes ensure component compliance for trains, metros, and tramways, including fire safety and electromagnetic compatibility.

Are your products compliant with defense standards?

Yes. Exxelia meets defense industry requirements through its EN 9100 certification and compliance with military standards (MIL-STD, STANAG). Our components are qualified for critical applications such as RF systems, embedded electronics, guided munitions, or radar systems. Some products are also subject to customer-specific qualification procedures.

What are the capabilities of Exxelia SVM’s high-frequency transformers?

Exxelia SVM designs high-frequency transformers operating up to 100 kHz and 500 kW. Custom units are also available, such as dry-type transformers (30 kVA at ~30 kHz, up to 50 kV DC) and high-voltage models (80 kVA, 20 kHz, ±25 kV outputs).

What range of magnetics components does Exxelia SVM offer to support power electronics design?

Exxelia SVM provides a wide portfolio of magnetics components, including high-frequency transformers, SMPS transformers, linear power transformers, inductors & chokes, reactors, current transformers, and custom magnetics—covering both high- and low-frequency applications.

What types of SMPS transformers are available from Exxelia SVM?

Exxelia SVM develops SMPS transformers in multiple topologies (flyback, push–pull, forward converter, gate drive, pulse), supporting up to 500 kHz. They cover various core geometries (EE, EFD, ETD, PQ, RM, ER, Pot, Toroid…) with conductors such as enameled copper, triple-insulated wires, Litz, and twisted wires.

Can Exxelia SVM’s magnetics solutions address defence or harsh-environment requirements?

Yes. Exxelia SVM serves high-reliability markets such as defence, medical, EV, and communications, ensuring compliance with strict safety and regulatory standards.

What are the characteristics of Exxelia SVM’s linear power transformers?

Exxelia SVM offers linear isolation transformers with high efficiency that comply with IEC and UL safety standards, e.g., a 3 kVA isolation transformer at 230 V / 50 Hz.

How does Exxelia SVM support current sensing in power electronics?

Exxelia SVM provides Hall-effect current transformers for high-speed AC and DC measurement up to 50 kHz.

What customization options does Exxelia SVM provide?

Exxelia SVM develops fully custom magnetics, offering in-house tooling, MATLAB/FEMM modelling, special core designs, Litz wire constructions up to 350 A, and complete solutions from prototype to packaging.

How does Exxelia SVM ensure compliance with international quality, environmental, and regulatory standards while delivering reliable and sustainable products to its customers?

Exxelia SVM PRIVATE LIMITED is committed to satisfy its interested parties by providing quality products and on time delivery meeting customers’ and statutory and regulatory requirements. This could be achieved by involving all in the organization and continually improve the effectiveness of Quality Management Systems.

And Exxelia SVM is committed to protect, conserve and enhance aspects of the environment over which we have control or can influence.

 

These will be achieved through commitment on

  • Strive to minimize waste and conservation through pollution prevention.
    Continually improve the effectiveness of Environmental Management System
  • Meeting the compliance with Applicable Legal and Other Requirements.
  • Conservation of resources like Oil, Water, Electrical energy, Packing material etc
  • Instilling awareness to the employees for maintaining a pollution free environment
  • Maintain open communication with public and other interested parties regarding Environment, Health and Safety.

 

Exxelia SVM is an ISO 9001:2015, ISO 14001:2015 Certified Organization and we comply with all Statutory Laws and Regulations.

Our Quality and Production Engineers are certified as per IPC-WHMA-A-620C (Requirements and Acceptance for Cable and Wire Harness Assemblies), IPC J-STD-001 (Requirements for Soldered Electronic Assemblies) & IPC-A-610 (Acceptability of Electronic Assemblies), IPC-A-600 (Acceptability of Printed Boards)

 

Exxelia SVM products are recognized under UL Insulation Systems
UL File No: E251904

  • Class 130 (B) coil and transformer insulation systems designated CIS.04, SIS-130
  • Class 155 (F) electrical insulation systems designated SIS-155- 1

 

Compliance to Safety and Regulatory Standards

  • IEC 60601-1, UL 60601, ES 60601-1:2005
  • IEC 61558-2- 13, IEC 61558-2- 4
  • UL 5085-1, UL5085-2

 

Reliability Standards
IEC62211 Level B (Vibration test, Drop test, Humidity test, Solder-ability test, Temperature cycle test, Continuous Vibration test)

ROHS, REACH and Packaging Regulations.

Exxelia SVM is the registered member in BOMcheck for Regulatory Compliance Declarations.

The Team at Exxelia SVM works closely with our Customers and Suppliers to establish the highest Quality Standards.

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