TDK's new advanced multilayer inductors meet the evolving POC needs of automobiles

The new inductor series provides high impedance over a wide range of frequencies

Compared with the inductors of competitors, the impedance change is significantly reduced during current application, and more effective power transmission can be achieved

Compact shape, saving valuable space

TDK Corporation (TSE: 6762) announced the launch of mlj1608wg series of new multilayer inductors. This compact component is designed for automotive coaxial cable power supply (POC). Mass production of this product began in August 2022.

The maximum impedance of mlj1608wg series inductors is 2500 Ω. In the frequency range of 300 MHz to 2 GHz, this series of inductors can also maintain an impedance level of 1000 Ω. Traditional multilayer inductors have great changes in impedance characteristics according to the applied current, and cannot guarantee sufficient impedance. However, the current change of mlj1608wg series inductors is much smaller. Although the size of this element is only 1.6 (long) × 0.8 (width) × 0.8 (high) mm, but can support a large rated current of 500 mA. This greatly reduces impedance variations in current applications. In addition, this element can guarantee performance at temperatures up to 125 ℃.

With the widespread uptake of advanced driver-assistance systems (ADAS), the performance of automotive cameras has advanced dramatically. Consequently, there are growing demands for higher-speed and larger-capacity interfaces. Automotive camera systems using LVDS transmission are adopting a PoC approach, which superimposes data and power supply onto a single coaxial cable.

With the wide use of advanced driving assistance system (ADAS), the performance of car cameras has also been significantly improved. Therefore, the demand for higher speed and larger capacity interfaces is also growing. The car camera system using LVDS transmission is using POC method to superimpose data and power on a coaxial cable.

POC transmits data and provides power, reducing the number of harnesses required. This helps to reduce the weight of the vehicle and saves space. In order to separate data and power in the POC circuit, effective filtering is required. This typically consists of 2 to 4 inductors. An inductor used for such a filter must have a high impedance to an AC component from a low frequency to a high frequency. To meet these requirements, the new mlj1608wg series is highly optimized by achieving an impedance value of 1000 Ω or higher over a wide range of frequencies.

In the future, TDK will continue to expand its product portfolio to meet the demands of a wider range of automotive applications for higher speed and larger capacity transmissions.