Planar transformers can be built as stand alone components, with a stacked layer design or a small multilayer PCB, or integrated into a multilayer board of the power supply.
Important advantages of planar magnetics include:
- very low profile
- excellent thermal characteristics
- low leakage inductance
- excellent repeat ability of properties
Ferroxcube offers a fabulous brochure presenting a fast and easy method to make designs for planar transformers. Download your copy of Ferroxcube’s Planar Transformer design paper here.




How do I obtain copies of the references given in the application note “Design of Planar Power Transformers”? I am looking for the references sited by S.A. Mulder 1990, and 1994. along with the other references given.
Regards,
Jim Spangler
Hi Jim! Thanks for reaching out to us. Unfortunately, most of the reference books and application notes were lost when Philips’ Holland engineering center was closed and the company name changed from Philips to Ferroxcube. For ref # 1, we may have a pdf copy but will need some time to search for it. For the #5 reference please go to: http://www.ferroxcube.com/appl/info/planconv.pdf