New-Tech Europe Magazine | March 2018

miniaturization, high efficiency in their circuit design. 48V Inverter Mild Hybrid systems In the conventional car most of the electronic systems are supplied by a 12V battery. Especially Electronic system for Interior applications. Electronic control unit for Engine system are supply by much high voltage for example 48V. The 48V in this case will be generated by a boost converter circuit. However with the increase of ECUs components in the car generating an 48V from the 12V Battery will lead to less efficiency, and high CO2-Emission. In order to achieve better efficiency and to reduce the CO2-Emission, Car maker will get rid of the 12V battery instead a 48V battery is generated. 48V architecture According to the research company IHS DATA, 48V number of vehicles will achieve 8.5Mio in 2023. As you can take on the picture 2.2, the classic 12V Battery will not be exist in the 48V Hybrid. Instead the 12V battery will be generated from the 48V by a DCDC converter. The 48V battery will be generated from the 48V starter generator. All high power the electronic system(engine system, braking system, EPS system..) will be therefore directly supply by the 48V battery and all low power system (Infotainment system, radio, clime control ..) will be supplied by the 12V battery system. This new architecture model will therefore better battery management system, better efficiency, better CO2-Emission. In addition an increase of the 48V will not only allow an increase of the power limitation to 12kW but

picture 3: comparison Panasonic vs Ferrite by inductance@current@temperature

High efficiency and low power consumption As we have already stated above high efficiency, low losses are the requirements for Lighting application design. As we know for inductor, there are two different Losses occurring: DC- losses and AC losses. DC losses are mostly due to the copper wire while AC losses are mostly due to the core losses. In the picture4, in the Y-Axis the AC-Resistance is showed and in the x-Axis the frequency. As you can take in the diagram, as the frequency increase, the core losses increase as well. With the Panasonic technology, the core losses can be reduced by almost half compare to the ferrite technology. Allowing therefore the improve the efficiency of the circuit design, to improve the thermal behaviour of the circuit and to reduce the losses. In addition, due to the monolithic structure,

eddy current losses can be better controlled or reduced. This will also lead to improve the power efficiency of the coil itself. As a result Panasonic metal composite power choke coil, can contribute to reduce the circuit losses, while improving the power efficiency and the thermal behaviour of the circuit. Miniaturization. Due to our monolithic structure, Panasonic is able to miniaturize the component. compare to the ferrite technology, Panasonic can achieve in smaller case size better electrical behaviour compare to the competitor in bigger case size. Conclusion: All the attributes of the Panasonic metal composite technology mentioned in the article are making the component so successful for lighting application and therefore allowing the electronic designer to achieve better thermal behaviour,

picture 4: comparison Pansonic vs Ferrite by AC-Resistance vs frequency.

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