As a wide bandgap semiconductor material, silicon carbide (SiC) has significant advantages in high-power, high-voltage, and high-frequency application scenarios, and its application scale in xEVs, including pure electric vehicles (BEVs) and plug-in hybrid electric vehicles (PHEVs), is growing rapidly. According to Yole Intelligence's 2023 Power SiC Report, from the perspective of the market size of various application products of SiC in xEV, it is divided into three main application products: DC-DC, OBC and traction inverter, of which traction inverter accounts for more than 90%, which is the main battlefield of the entire automotive SiC.
数源：Yole Intelligence
ROHM Semiconductor, a world-renowned semiconductor manufacturer, has developed the TRCDRIVE pack™, a 2-in-1 SiC package module for traction inverters for xEVs up to 300 kW, with a total of four products (2 models for 750 V and 2 models for 1200 V). The so-called "two-in-one" combines a high-side MOSFET and a low-side MOSFET in each phase of a three-phase alternating current into a single module.
Source: ROHM
The TRCDRIVE pack™ has the following features: Miniaturization: 28% reduction in size. ROHM's own layout design allows the current to flow evenly between the internal chips; Path separation of the main current and the control signal (with Press fit pin); The 4th generation SiC MOSFETs with low on-resistance are used for higher efficiency. High power density: By maximizing the heat dissipation area, the industry's highest power density is 1.5 times that of conventional products. Reduced installation man-hours: The TRCDRIVE pack™ uses a "press fit pin" pin with an internal layout and ROHM's own packaging technology, and the gate drive circuit board can be connected by simply pressing it from the top. Mass production: Established a discrete mass production system and increased production capacity by approximately 30 times compared to conventional SiC shell-type modules. ROHM continues to innovate in the field of SiC technology and is committed to providing high-performance power device solutions. According to ROHM staff, the company's product line is not limited to "2-in-1" SiC modules, and is currently actively developing a new "6-in-1" module equipped with a heat sink, and samples are expected to start supplying the market in the second quarter of 2024. The new "6-in-1" modules offer a 1.3-fold increase in power density compared to conventional SiC shell-based modules, which will help accelerate the design of traction inverters that meet specifications and expand the lineup.
Source: ROHM
In order to further strengthen its brand influence in the field of SiC technology, ROHM has launched a new silicon carbide brand, EcoSiC™. The EcoSiC™ brand name is a clever combination of "Eco" (for ecosystem) and "SiC" (for silicon carbide), symbolizing ROHM's commitment to combining sustainable ecosystems with superior technology. The design of the brand logo, which incorporates a circuit pattern and a hexagonal crystal structure, not only represents the precision and innovation of SiC technology, but also underlines ROHM's strong commitment to providing advanced and sustainable solutions.
Source: ROHM
With the booming xEV market and the growing demand for high-efficiency, high-performance power devices, ROHM is leading the industry in a more efficient and environmentally friendly direction with its innovative SiC technology. ROHM's "2-in-1" SiC package module "TRCDRIVE pack™" and the upcoming "6-in-1" module not only demonstrate the company's technological progress in high power density and miniaturization, but also demonstrate its relentless pursuit of simplifying the installation process and increasing production efficiency.