Since 2023, these power modules have been produced in large volumes and shipped from HAIMOSIC, a joint venture between ROHM and Zhenghai, to Viridi E-Mobility Technology, a Tier 1 supplier under Geely.
The collaboration between Geely and ROHM began in 2018 with technical exchanges, evolving into a strategic partnership in 2021, focused on SiC power devices. This partnership has resulted in the integration of ROHM’s SiC MOSFETs into the traction inverters of three ZEEKR models: the X, 009, and 001. In each of these electric vehicles, ROHM’s SiC MOSFETs contribute significantly to extending driving range and enhancing overall vehicle performance.
ROHM remains dedicated to advancing SiC technology, with plans to release fifth-generation SiC MOSFETs in 2025, and is working to accelerate the market introduction of sixth and seventh-generation devices. By offering SiC technology in various forms—bare chips, discrete components, and modules—ROHM aims to encourage the widespread adoption of SiC, supporting the development of a sustainable society.
ZEEKR models featuring ROHM’s EcoSiC
The ZEEKR X, a compact SUV with a maximum output exceeding 300kW and a cruising range of over 400km, has garnered attention beyond China for its impressive value for money. The 009 minivan boasts an intelligent cockpit and a large 140kWh battery, enabling a remarkable cruising range of 822km. The flagship model, the 001, delivers a maximum output of over 400kW from dual motors, with a range exceeding 580km and a four-wheel independent control system for enhanced performance.
Market context
In recent years, there has been a growing focus on developing more compact, efficient, and lightweight electric systems to support the broader adoption of next-generation electric vehicles (xEVs) and to meet environmental objectives, such as achieving carbon neutrality. For electric vehicles, in particular, improving the efficiency of the traction inverter—a crucial component of the drive system—is vital for extending driving range and reducing the size of the onboard battery, thus raising expectations for SiC power devices.
ROHM, which was the first company in the world to commence mass production of SiC MOSFETs in 2010, continues to lead the industry in the development of SiC technology. These devices are now marketed under the EcoSiC brand, offering a comprehensive range that includes bare chips, discrete components, and modules.
