TDK's advanced multilayer inductors meet the growing demand for automotive PoC

     TDK Corporation's MLJ-G series multilayer inductors are designed for automotive coaxial cable power (PoC) applications. The maximum impedance of MLJ1608WG series inductors is 2500 Ω. It also maintains an impedance level of 1000 Ω in the 300 MHz to 2 GHz frequency range. Although the impedance characteristics of traditional multilayer inductors vary greatly due to the applied current and cannot ensure sufficient impedance, the current variation of MLJ1608WG series is much smaller.

     Although the dimensions of these groups of elements are 1.6 mm (L) x 0.8 mm (W) x 0.8 mm (H), they still support a high rated current of 500 mA. This significantly reduces the change in impedance during current application. In addition, these elements provide reliable performance at temperatures up to+125 ° C.

     With the wide application of Advanced Driving Assistance System (ADAS), the performance of car cameras has been significantly improved. Therefore, the demand for higher speed and larger capacity interfaces is growing. The car camera system using LVDS transmission is using PoC method to superimpose data and power on a coaxial cable. PoC performs data transmission and power supply at the same time, reducing the number of harnesses required.

     This helps to reduce the weight of the vehicle and achieve space savings. In order to separate data from power supply in PoC circuit, effective filtering is required. This usually consists of two to four inductors. Inductors used in such filters must have high impedance to AC components from low frequency to high frequency. The MLJ1608WG series is highly optimized for these requirements by achieving 1000 Ω or higher impedance values over a wide frequency range.