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TDK develops industry’s highest rated current inductors for automotive Power over Coax systems

October 26, 2021 — TDK Corporation (TSE:6762) announces the release of its newly developed ADL3225VM inductors for use in automotive Power over Coax (PoC) systems. Measuring at 3.2 x 2.5 x 2.5 mm (L xW x H), these inductors provide a compact solution for designers looking to reduce vehicle weight as manufacturers add more sensors and cameras to accommodate expanding automotive and advanced driver-assistance systems (ADAS) applications. The proprietary structural design and wire winding manufacturing process ensure high impedance over a broad bandpass of 1 MHz up to 1 GHz. The inductors are compliant with AEC-Q200 and achieve the highest-rated current in the industry for the 3225 size*. Volume production began in October 2021.

Performance advancements of ADAS applications have resulted in the increased production of electric control units (ECUs), particularly around view cameras and front sensing cameras, escalating the need for high-speed interfaces. Low-voltage differential signaling (LVDS) with transmission rates of up to 1.5 Gbit/s transfer image signals from automotive cameras to the control circuit board. This process involves PoC systems that relay data and power over the same coaxial cable. TDK’s ADL3225VM inductors serve as a blocking coil that separates ringing currents from the power supply, and increases the currents supplied by PoC systems. They support operating temperatures between -55 °C and +155 °C.

In the future, TDK will further expand the product portfolio to meet the needs of higher-speed and larger-volume transmission for an even wider variety of automotive applications.

*Source: TDK, as of October 2021

Glossary
•PoC (Power over Coax): Transmission technology whereby both data and power are simultaneously transmitted over the same coaxial cable

Main applications
•PoC for ADAS camera system circuits

Main features and benefits
•Achieves the highest rated current in the industry for the 3.2 mm (L) x 2.5 mm (W) size
•Achieves high impedance over a broad bandpass
•Supports a wide operating temperatures range between -55 °C and +155 °C

About TDK Corporation
TDK Corporation is a world leader in electronic solutions for the smart society based in Tokyo, Japan. Built on a foundation of material sciences mastery, TDK welcomes societal transformation by resolutely remaining at the forefront of technological evolution and deliberately “Attracting Tomorrow.” It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK’s comprehensive, innovation-driven portfolio features passive components such as ceramic, aluminum electrolytic and film capacitors, as well as magnetics, high-frequency, and piezo and protection devices. The product spectrum also includes sensors and sensor systems such as temperature and pressure, magnetic, and MEMS sensors. In addition, TDK provides power supplies and energy devices, magnetic heads and more. These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. TDK focuses on demanding markets in automotive, industrial and consumer electronics, and information and communication technology. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2021, TDK posted total sales of USD 13.3 billion and employed about 129,000 people worldwide.

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