TDK Corporation develops small and thin film power inductors

21ic News TDK Co., Ltd. has developed a small and thin film power inductor for mobile device power circuits, and has been mass-produced since September 2012.

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The mobile phone market is rapidly transforming into high-performance, versatile smartphones. This requires an inductor for a power supply circuit DC-DC converter to have a high rated current characteristic, and at the same time, due to the space saving of the circuit, the external size is also required to be small and thin.

The mainstream of the inductor core material is ferrite, and the product uses a high-saturation magnetic flux density metal magnetic material using TDK's original material technology. Its rated current is about 2 times that of the previous product, and it has stable DC overlap characteristics. In addition, with the wafer-based TDK's original thin film technology, a coil pattern with higher precision is formed, and the electroplating generation technology is fully utilized to reduce the DC resistance that causes loss of power efficiency.

The smart phone is equipped with a plurality of power inductors. By using this product, power loss can be suppressed to save power and the battery life can be extended.

To fully meet the requirements for electrical characteristics and form factor, TDK has expanded its product range to include the smallest size of 1.6 x 0.8 x 1.0 (L x W x H mm in the inductor industry with metal magnetic materials as the core material). The same as below), and 2.5 × 2.0 × 1.0 (same), 2.0 × 1.6 × 1.0 (same), 2.0 × 1.2 × 1.0 (same) and the like. Inductance values ​​range from 0.47 to 2.2μH and current ratings range from 4.0 to 0.8A, resulting in a wide range of products.

main application

Smartphone, tablet

Power supply circuit of module components, etc.

Main features and advantages

Use a metal material on the magnetic body to achieve high current

Small and thin and low DC resistance by applying thin film technology

Main characteristics

Main characteristics

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