Power inductors are used for the purpose of smoothing in PM (Power Management) ICs and DC-DC converters that require high-rated current and low RDC (Resistance).
SEMCO owns a product lineup of low-current multilayer-type inductors, high-current/high-efficiency HEPI (High Efficiency Power Inductors) and high current/high capacity winding-type inductors.
- Use of metal composite that has less power consumption
- Magnetically shielded structure
- Free of all RoHS-regulated substances
- Monolithic structure for high reliability
- DC-DC converters for DSC, DVC, PDA, and others
Classification of Power Inductors
Depending on the body materials, power inductors are divided into ferrite inductors and metal composite inductors. The metal composite inductors are high in rated current and superb in efficiency.
Characteristics of Metal Magnet Thin Film Type
Materials with lower core loss and internal electrodes (coils) with a higher A/R ratio are used. These products show high-efficiency characteristics and have very high characteristics of rated current (DC-bias) compared with multilayer-type products.
[ Metal Composite Power Inductor : CIGT Series(Thin Film Type) ]
Characteristics of Metal Magnet Winding Type
Metal magnet winding-type inductors have high-efficiency and high-current (DC-bias) characteristics due to their optimal body material composition and coil. These inductors are recognized for their high capacity (4.7 μH).
Superb Efficiency Characteristics
If the power inductor efficiency is low, battery consumption increases. Efficiency test results show that power inductors are superior to ferrite winding-type inductors in terms of efficiency. Samsung has continuously developed and launched metal magnet power inductors with improved efficiency.
|0806 HM||0603 UM|
|L(nominal)||0.24 uH||0.24 uH|
|DC Resistance Typ||17mΩ||28mΩ|
Winding-type inductors are made by winding coils in “α” shape and the surrounding magnet around them.
Thin Film Type
Thin film–type inductors are made by plating coils on substrates and surrounding them with magnets.
Multilayer-type inductors are made by printing electrodes on magnet sheets and stacking the layers of magnet sheets. Magnet sheet covers are placed on the top and bottom