Hello everyone, hope you would keep healthy. This is Kondo, working at Renesas Electronics Europe located in Germany/Dusseldorf. I’m responsible for technical marketing of Power device, and is directly supporting new device promotion and customer’s technical trouble shooting at here, Germany.
We have, in the past blog, introduced Renesas Power devices in series. The last time was the introduction of development activities of power device for xEV powertrain application (please refer to the link). This time, let me introduce the xEV market status in Europe, where one of the most active area, and our promotion activities.
Power device is one of the key parts which contributes on the Electrification in xEV, which is just in the drastic variation once in a century. Then, what/how can Renesas support our customer (OEM/Tier1/Tier2) with differentiation towards the upcoming explosive ramp-up??
Customer’s Expectation 1: “High efficiency” & ”Hard to break” car design！
- Power consumption: The lower power loss device (= higher efficiency) in the motor inverter directly support to enable Li-ion battery to save charged battery capacity. In other words, the performance directly affects performance on the necessary Li-ion battery size which is dominant cost factor, or on the maximum driving range which is important KBF (Key Buying Factor) by end-customer.
- Reliability: In order to maximize the module maker’s added value such as high reliability and high heat dissipation, the interface specifications of top- / bottom-metallization on semiconductor need to be sensitively adjusted to customers assembly method, like wire bonding, soldering or even sintering.
- Robustness: Robust design in conversion / control of huge power (e.g. >100kW), knowledge and experience of power semiconductors is essential. We are continuously in optimization phase by deep collaboration with inverter / module manufactures.
Renesas’s Response 1: Low Loss & High Robustness Power device
The design of Power device is optimized by so complicated and sensitive trade-off parameters to fulfill the market requirement like loss, reliability, robustness and so on that much of experience/know-how is needed. The feature of Renesas Power device is to realize the highest performance in W/W with keeping enough robustness. This value is admitted by our customers, and as a result, our device is applied by W/W customer’s vehicles. We will introduce the details of our Power device feature at next time blog from designer’s view. You can look forward to it.
Customer’s Expectation 2: Preparing for explosive ramp-up
It is also remarkable point that OEMs paying attention to keep the supply channel and the stable production for upcoming explosive ramp-up, and accordingly value / expectation on semiconductor is getting higher. From BCM (Business Continuous Management) point of view, OEMs tend to apply multi source policy even in semiconductor supplier. At the same time, stable production support is also being emphasized in the face of ramp-up, such as annual production of 10-thousands to millions of vehicles. For example, enhanced screening in the upstream process or even lot traceability of shipment parts is admitted as added value. Thus, such stable supply capacity and table production support are becoming a new KBF (Key Buying Factor) in addition to conventional factors like prices, performance and quality, which are generally regarded as mandatory.
Renesas’s Response 2: Mass production support by Advanced screening technology
Renesas is leading screening technology in wafer test. The screening of potential defect in power device, which can only be detectable by dynamic stress tests, requires know-how and high technology in wafer test. On the other hand, if failure occurred at customer’s module test, it takes several tens of times of the scrap cost. Therefore it is admitted by customer as an added value.
Thank you so much for having a look on this blog. Please feel free to contact us if you are interested in our power device.
And, there is more to come for in this series blog. See you next time!