Abstract
We have developed a new printed circuit board (PCB) technology adapted for the fabrication of ultra-flat microtransformers. The two outer layers of the PCB stack comprise the electrical windings of the inductive devices, while the inner layer is made of a micro-patterned amorphous magnetic ribbon with extremely high relative magnetic permeability ( μ r ≈ 100000). Two basic configurations were considered; one being based on a toroidal magnetic core and the other on a rectangular (E-shaped) magnetic core. The electrical properties of the microtransformers have been studied as a function of frequency. Inductances were found to be as much as 30 μH at 1 kHz, a relatively high value compared to microtransformers of similar size. Despite a relatively high leakage flux, voltage transformation efficiencies were measured between 89% and 98%. The high performance of these devices is primarily due to the use of the high permeability magnetic core. The characteristics of these devices are discussed in light of geometrical considerations and finite element calculations.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
