News
Murata Expanded DFE2MCPH_JL Industrial-grade Inductor
On September 7th, Murata added 9 new inductance values to its automotive-grade metal power inductor DFE2MCPH_JL series and has begun mass production
. After the addition, this series covers a wider range of inductance values within the 0806 inch (2.0×1.6 mm) small package. The company emphasizes that it
has low DC resistance (DCR), high current capacity, and a 40 V withstand voltage, and has passed AEC-Q200 automotive-grade certification. It is targeted at
automotive power circuits such as ADAS and in-vehicle infotainment (IVI).
In the press release, Murata explained that in recent years, the performance and functions of ADAS and IVI systems have continued to improve, leading to an
increase in the demand for smaller, more efficient, and lower-loss automotive power circuits. At the same time, the power supply requirements for different
applications are becoming increasingly diverse, and designers need a wider range of inductance values to select the most suitable components for each power
circuit. The 9 newly added values include 0.10, 0.15, 0.22, 0.68, 1.0, 1.5, 2.2, 3.3, and 4.7 μH, with the addition of the previously existing 0.33 and 0.47 μH, forming
a more complete selection range.
The central computing architecture has centralized the power supply originally distributed in modules around a few high-performance computing chips, resulting
in an increase in the number of power rails and different current and ripple requirements for each rail. Although the inductors are small devices, they are the
front-line checkpoints for power integrity and EMI: choosing values that are too large will slow down the transient response and amplify the output voltage
ripple, while choosing values that are too small will increase peak current and loss. When there are dozens of independent PoL (board-level power supply
point) power rails on a vehicle computing board, the selection of passive components shifts from "using a few large values for general use" to "a fine-grained
multi-value selection based on each rail". Murata's expansion corresponds to the reality of multiple power rails in ADAS/IVI systems, where designers hope to
match the different power supply scenarios with a denser range of inductance values instead of using a few specifications to cobble together.