| Autor: |
Y. Mano, Hyung-Mi Jung, Jin-Seok Moon, Yong-Soo Oh, Seok Bae |
| Rok vydání: |
2005 |
| Předmět: |
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| Zdroj: |
The 13th International Conference on Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05.. |
| DOI: |
10.1109/sensor.2005.1496561 |
| Popis: |
The demand for miniaturized magnetic passive devices in power modules has been rapidly growing with mobile handset technology. Thus, we developed a minimum construction and sized planar inductor for micro DC-DC converters with a ferrite plating method and conventional flexible PCB processes. The ferrite plating process made it possible to deposit Ni-Zn spinel ferrite on a Cu electroplated planar coil without a non-magnetic insulation layer. These samples of a planar inductor with ferrite layers achieved a high quality factor of 17/spl sim/24 at 3/spl sim/5 MHz and inductance of 1.25/spl sim/1-30 /spl mu/H in 6.0/spl times/6.0/spl times/0.19/spl sim/0.20 mm/sup 3/, respectively. In addition, the estimated power loss of this developed inductor at 5 MHz in a switching buck DC-DC converter was about 15.7%. It showed excellent capability for portable power systems. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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