New-Tech Europe Magazine | March 2018

conventional design system had to be changed using new components with high temperature, high ripple requirement and miniaturize compare to conventional THT products. As you can take on the block diagram in picture 2.2.1, the conventional THT component will be replaced by SMD components. The Panasonic capacitors is designed for the DC-link. SMD technology capacitors will therefore allow the design to be much more miniaturize even tough the number of SMD capacitors might increase. In order to fulfil the engineer design requirement for the DC-link, Panasonic have offered its new Hybrid Series call ZE-Series. This new Panasonic Series has been developed in order to cover the 48V requirements for the DC-Link for this 48V E-machine. As characteristic the ZE-Series can achieve 125°C case temperature at 4000h, in larger case size and high ripple current more than 2.8A. The stability of the ESR at temperature and over the life time is providing reliability of the ECU itself. Conclusion: Innovation is driven by the problem we are facing every day. Innovation lead to new idea, creativity. As the requirement in automotive are permanently increasing, changing and becoming tougher and tougher to achieve: high temperature, high reliability, low power consumption, better CO2-emission, less space and so on, designer facing the difficulty to improve their electronic design. This also lead components supplier to improve their product to cover the automotive or customer's requirements. electronic

picture 2.1.1: Market trend 48V Mild Hybrid

picture 2.1.2: 48V Architecture.

DC-Link H-bridge Motor

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48V

Picture 2.2.1: Block diagramm 48V E-machine

As it already eluded in the previous chapter, the reason to get rid of the 12V batteries and to introduce the 48V battery is mostly due to the improvement of power efficiency, to reduce space and reduce weight of the electronic system. In order to fulfil the above requirement

also will lead to a reduction of cable harness in the car by 75%. This will therefore lead to less weight, cost reduction and less space. Why is panasonic SMD hybrid capacitors are so usefull for electronic design purpose

New-Tech Magazine Europe l 45