Power Magnetics
磁性塗布線を用いた近接効果に起因する交流抵抗の低減
キーワード:
magnetitocoated wire,
magnetic path control technology,
copper wire,
AC resistance,
proximity effect
2019 年 3 巻 1 号 p. 54-57
詳細
2019 年 3 巻 1 号 p. 54-57
Miniaturization and high efficiency of electronic device is required. The elements such as inductors and capacitors used in electronic equipment, are working to miniaturization and high efficiency by higher frequency. Along with the higher frequency of the driving frequency, AC resistance increases due to iron loss and copper loss. So, the authors have developed Magnetocoated wire (MCW) that has a magnetic layer around the copper wire to reduce the AC resistance. MCW reduces AC resistance because a magnetic layer leads a magnetic flux. As a result AC resistance in coil using MCW was reduced 32.1% in 1 MHz, 24.7% in 100 kHz, 20 % in 10 kHz.
