Transformers
Custom Toroidal, Planar & Bobbin-Wound
GB International designs and manufactures custom transformers for demanding power electronics applications across industrial, automotive, energy, aerospace, and defense markets. Our transformer solutions are engineered to meet strict electrical, thermal, mechanical, and compliance requirements, supporting both prototype development and long-term production programs.
From toroidal and bobbin-wound designs to high-density planar and high-voltage transformers, GBI partners directly with engineering teams to deliver reliable, production-ready magnetic solutions.
Toroidal & Bobbin-Wound Transformers
Toroidal and bobbin-wound transformers offer flexible design options for a wide range of industrial and automotive power systems.
Typical Applications
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Industrial power supplies
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EV charging and auxiliary power systems
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Control electronics and PLC systems
Design Benefits
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High efficiency with controlled EMI
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Flexible winding and core configurations
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Proven reliability in continuous-duty environments
Copper Stack-Up Planar Transformers
Planar transformers are optimized for high-density, high-frequency power electronics where size, thermal performance, and repeatability are critical.
Typical Applications
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EV onboard chargers
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DC-DC converters
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Compact industrial power modules
Design Benefits
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Low-profile, space-efficient construction
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Excellent thermal characteristics
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Consistent, repeatable manufacturing for volume production
High-Voltage Transformers
GB International designs high-voltage transformers for applications requiring robust insulation systems and long-term electrical reliability.
Typical Applications
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Energy storage systems
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Grid-connected power equipment
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Aerospace and defense electronics
Design Benefits
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Custom insulation systems and creepage/clearance control
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Designed for electrical stress and long service life
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Alignment with applicable safety and regulatory standards
GB International operates under established quality systems and supports regulatory and customer compliance needs, including:
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ISO 9001 and IATF 16949 quality systems
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Support for AEC-Q200-aligned programs where applicable
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RoHS, REACH, WEEE, IMDS, and Conflict Minerals reporting support
Our teams understand qualification processes, documentation requirements, and long product lifecycles common in industrial, automotive, and aerospace programs.
Engineering Partnership from Concept to Production
GB International collaborates directly with customers throughout the design lifecycle, including:
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Application review and requirements definition
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Electrical, thermal, and mechanical optimization
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Prototype development and validation
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Production readiness and ongoing manufacturing support
If you do not see an existing transformer that meets your needs, our engineers will work with you to develop a custom solution.
Frequently asked questions
Ready to Discuss Your Transformer Requirements?
Our engineering and customer service teams are available to assist with product selection, datasheets, and custom transformer designs.