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ST To Supply SiC Power To Renault-Nissan-Mitsubishi

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SiC MOSFETs and rectifier diodes will be used to build more efficient and compact on board chargers

STMicroelectronics has been chosen to supply high-efficiency SiC power electronics by Renault-Nissan-Mitsubishi (Alliance) for advanced on-board chargers (OBCs) in its upcoming electric vehicles.

Renault-Nissan-Mitsubishi plans to use the new SiC power technology to build more efficient and compact high-power OBCs that will further increase attractiveness of electric vehicles for the users by cutting battery-charging time and enhancing driving range. As Renault-Nissan-Mitsubishi's chosen partner for advanced SiC technology, ST will provide design-in support to help maximise OBC performance and reliability

ST is also to supply Renault-Nissan-Mitsubishi with associated components, including standard silicon devices. The OBCs with ST's SiC are scheduled to enter volume production in 2021.

EVs need an OBC to handle charging from standard roadside charge points, when a dedicated home-charging system or super-charger is not available. The time to recharge is determined by the OBC power rating. The units in today's EVs have ratings between about 3kW and 9kW.

Renault-Nissan-Mitsubishi has already created a 22kW OBC for the Renault Zoe model, which can fully recharge the battery in about one hour. Now, by upgrading the OBC to SiC power semiconductors (MOSFETs and rectifier diodes), Renault-Nissan-Mitsubishi says it can further reduce the size, weight, and cost while increasing energy efficiency to make future models even more attractive for users and beneficial for the environment.

“As the pioneer and global leader in zero-emission electric vehicles, our objective remains to be the number one provider of mainstream mass-market and affordable EVs around the world,” said Philippe Schulz, Alliance VP Design Electric and Hybrid Powertrain. “The small size, light weight, and high energy efficiency we can achieve using ST's SiC technology in our OBC, combined with the increased battery efficiency, will enable us to accelerate the adoption of electric vehicles by reducing charging times and extend the range of our EVs.”

Marco Cassis, president, sales, marketing, communications and strategy development, STMicroelectronics, said, “SiC technology can help the world by reducing dependence on fossil fuels and increasing energy efficiency. ST has successfully developed manufacturing processes and established a portfolio of qualified, commercialised SiC products also in automotive-grade version.

"Building on our long cooperation, we are now working with Renault-Nissan-Mitsubishi to realise the many advantages SiC can bring to EVs. Moreover, this commitment helps ensure success by increasing the economies of scale to deliver superior-performing SiC-based circuits and systems that are also cost-effective and affordable.”

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