Fraunhofer Institute for Silicon Technology
Fraunhofer Institute for Silicon Technology

Planar transformers

Planar transformers & inductors

Planar magnetics leverage PCB copper foils, instead of traditional wire windings, combined with specialized magnetic cores to deliver high power density transformers and inductors. This innovative approach supports the creation of compact, efficient, and reliable magnetic components tailored to modern power electronics needs.

At Fraunhofer ISIT, we specialize in designing and testing planar transformers and inductors that meet the specific requirements of our clients. Leveraging our deep expertise in magnetic devices and power electronics, we adopt a comprehensive development process, including the integration of planar magnetics into complete converter systems for a holistic design approach / strategy.

Expand all Close all

Our team brings extensive experience and cutting-edge capabilities to every project:

  • Multiphysics simulation: We employ system-level simulations to ensure seamless integration
  • Multi-objective optimization: Our designs achieve optimal trade-offs across multiple parameters, balancing in particular efficiency, power density, and cost
  • Advanced testing and characterization: Utilizing state-of-the-art laboratories, we rigorously test components under controlled electrical and environmental conditions

The planar transformers that we design offer:

  • High power density: Achieving up to >30 kW/L for compact and powerful designs
  • Precision and reliability: Controlled parasitic elements, including leakage inductance, parasitic capacitances, thermal resistance, and power loss, ensuring consistent performance
  • Low profile design: Ideal for space-constrained applications
  • Broad frequency range: Operating at medium to high frequencies, up to >200 kHz
  • High power ratings: Delivering up to >30 kW for demanding power conversion requirements

Read about it in our latest papers:

Circular Economy Oriented and Reconfigurable Planar Transformer Design for Isolated DC/DC Converters, F. Groon, H. Beiranvand, G. Can, M. Liserre, PCIM 2024, doi: 10.30420/566262476 [ https://doi.org/10.30420/566262476 ].

Download the paper here

Resonant Multiport Converter with High Interconnection Capability and Lower Parameter Deviations, F. Groon, T. Pereira, S. Schikowski, D. Metschies, M. Liserre, PCIM 2023, doi: 10.30420/566091157  [ https://doi.org/10.30420/566091157 ].

Download the paper here