Ring transformers

The high-power ring-shaped ceramic multilayer transformer is Noliac's patented PZT transformer designed to operate on the thickness mode resonance, enabling extremely high power density levels.

This technology is especially attractive for compact and high efficiency step up or step down applications, such as adaptors for electronic equipment. 
 

Additional benefits include:

• Very high efficiency (>98%) 
• High power density (>40 W/cm3) 
• Little electromagnetic interference (EMI) 
• Very high and variable transformation ratios possible 
• Integrated galvanic insulation between input and output 
• Working frequency in the range 400kHz to 2MHz

The technology of the ring-shaped transformer is currently developed to prototype stage.

Noliac is now searching for strategic partners, which could be interested in commercializing this technology, either by selling rights to specific market segments or by developing solutions for specific applications via external funding.

The applications where the ring-shaped transformer will be excellent suitable for, is expected to be for switch mode power supplies and point of load applications requiring high power density and very low EMI.