Panasonic – New metal composite power inductors save space in automotive applications


Panasonic Automotive & Industrial Systems has introduced to the market a new series of Metal Composite Power Inductors which enable automotive designers to save space and weight in circuits such as DC-DC converters and filters.

The innovative metal composite structure of Panasonic’s new power inductors offers important advantages over conventional ferrite-based technology. As well as providing for miniaturisation, it also provides high-current characteristics, low power consumption, and toleration of strong vibrations.

The new devices are expected to be popular with designers of automotive Electronic Control Units (ECUs). New ECU designs have to fulfil a demanding set of requirements, not only providing more functionality in a smaller package, but also carrying high current and power while offering high efficiency and low power consumption. The features of the new metal composite power inductors are an ideal match for such designs.

The devices are also notable for their robustness: they can withstand operating temperatures up to 155°C, and vibrations up to 30g. No de-rating is required at high temperatures, and the devices’ characteristics are guaranteed across the rated operating-temperature range.

At switching frequencies higher than 300kHz, the AC resistance of the Panasonic power inductors is almost 50% lower than that of equivalent ferrite-core technology.


  • Inductance values from 0.22μH to 100μH
  • High peak bias current
  • Non-hard saturation characteristic


  • Engine ECUs
  • Powertrain
  • Electric power steering
  • Automotive lighting systems
  • ADAS modules
  • Motor and pump controls
  • Infotainment systems
  • Control panels