Title :
Thin type DC/DC converter using a coreless wire transformer
Author :
Onda, Kenichi ; Kanouda, Akihiko ; Takahashi, Tadashi ; Hagiwara, Shuuya ; Horie, Hideaki
Author_Institution :
Res. Lab., Hitachi Ltd., Ibaraki, Japan
Abstract :
A 10 W class thin type DC/DC power converter is developed which uses a new type of coreless wire transformer. The power converter is intended for portable equipment use. The coupling factor of the wire transformer is more than 95% at frequencies higher than 100 kHz. When applied in a 3 output DC/DC power converter, the power converter is only 5.5 mm thick and has 70% efficiency
Keywords :
DC-DC power convertors; power supplies to apparatus; power transformers; transformer windings; wires (electric); 10 W; 5.5 mm; 70 percent; coreless wire transformer; coupling factor; portable equipment; power supply; thin type DC/DC power converter; Coils; DC-DC power converters; Frequency; Inductance; Magnetic cores; Magnetic flux; Microcomputers; Spirals; Transformer cores; Wire;
Conference_Titel :
Power Electronics Specialists Conference, PESC '94 Record., 25th Annual IEEE
Conference_Location :
Taipei
Print_ISBN :
0-7803-1859-5
DOI :
10.1109/PESC.1994.373856
