Feature: Automotive system design


Figure 5: The bias-T inductor design support tool streamlines automotive PoC inductor selection and bias-T circuit characterisation


of various applications. Each solution in this family delivers high impedance across a broad frequency range, a performance characteristic that would previously require multiple inductors to achieve. This feature enables effective signal blocking while minimising the size and complexity of the bias-T circuit.


PoC inductor for powertrain applications Powertrain subsystems often involve sensor-driven communications with relatively low data rates. For these applications, a high-inductance solution such as Murata’s LQW43FT180M0HL (Figure 2) helps deliver stable power. Its 18µH rating provides high impedance


at low frequencies, effectively blocking unwanted signal content. This performance holds up through its self- resonant frequency of 40MHz, which aligns well with the frequency range of typical powertrain data streams. The inductor is rated at 600mA,


suitable for many peripheral subsystems within the powertrain. Its low DC resistance of 160mΩ minimises power loss, whereas its 1812 package (4.5mm × 3.2mm × 3.7mm) is a compact alternative to multi-inductor designs.


PoC inductor for ADAS applications ADAS applications must handle significantly higher data rates from


20 October 2025 www.electronicsworld.co.uk


sensors, such as high-resolution cameras. The LQW32FT2R2M0HL (Figure 3) is a medium-inductance 2.2µH solution designed for this purpose. Its self-resonant frequency of 200MHz enables effective signal blocking for high-bandwidth communications. In addition to high data rates,


ADAS subsystems often have significant power requirements. This inductor’s 1A rating meets these higher-power requirements, including LiDAR sensors or the actuators used in automated lane- keeping systems. Its 1210 package measures only 3.2mm × 2.5mm × 2.5mm.


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44