25W DC-DC converter using integrated planar transformers.pdf

technical note Philips Magnetic Products 25 Watt DC/DC converter using integrated Planar Magnetics Philips Components 25 Watt DC/DC converter using integrated Planar Magnetics Contents Introduction 2 Converter description 3 Converter specification 4 Performance of the converter 4 Design of planar magnetics 6 PCB layout 8 Circuit diagram 11 Components list 12 1 Philips Magnetic Products 25 Watt DC/DC converter using integrated Planar Magnetics (designed in cooperation with PEI Technologies, Ireland) Introduction Planar magnetics are an attractive alternative to The aim of this demonstration board is to demonstrate conventional core shapes when a low profile of magnetic the capability of Philips’ planar E cores (see Data devices is required. Basically this is a construction method Handbook MA01). One of these cores is used in the of inductive components whose windings are fabricated design of a high frequency 25 W DC/DC converter. A 6 using printed circuit tracks or copper stampings separated layer PCB is used to facilitate the integration of the by insulating sheets, or constructed from multilayer circuit transformer and output ind