As the electrification of automobiles rapidly advances towards a decarbonized society, the development of more efficient, compact, and lightweight electric powertrain systems is now essential. However, achieving low losses in a small size for SiC power devices, which are attracting attention as key components, has not been an easy challenge. ROHM has solved these problems within powertrains with its TRCDRIVE pack™.
TRCDRIVE pack™ is a trademark of ROHM's molded-type SiC modules developed specifically for traction inverter drive applications. It reduces size by utilizing a unique structure that maximizes heat dissipation area. Furthermore, ROHM's low-conduction-resistance 4th generation SiC MOSFETs are integrated, resulting in an industry-leading power density 1.5 times higher than that of general molded SiC modules, while also contributing significantly to the miniaturization of electric vehicle (xEV) inverters.
The modules are also equipped with control signal terminals that use push-in contacts, allowing for easy connection by simply pushing the gate driver board from above, which significantly reduces installation time. Furthermore, low inductance (5.7 nH) is achieved by maximizing current path and using a two-layer busbar structure for the main wiring, which helps reduce switching losses.
Despite developing modules, ROHM has established a serial production system similar to that of discrete products, which allows for a 30x increase in production capacity compared to conventional SiC case-type modules.
Product Range:
The TRCDRIVE pack™ is scheduled for launch in March 2025 with a range of 12 models in different package sizes (Small/Large) and mounting patterns (TIM: Heat Dissipation Foil/Sintered Ag). In addition, ROHM is developing a 6-in-1 product with an integrated heat sink, which is expected to contribute to the rapid design of traction inverters and the launch of models tailored to a wide variety of design specifications.
Application examples:
Traction inverters for the automotive industry
Sales Information
Availability: June 2024 (OEM quantities)
comprehensive
application-level support, including the use of proprietary test equipment for motor testing. A variety of support materials are also available, such as simulations and thermal designs, enabling rapid evaluation and adoption of TRCDRIVE pack™ products. Two evaluation kits are also available: one for dual-pulse testing and another for three-phase full-bridge applications, allowing for evaluation under conditions similar to those of practical inverter circuits.
For more information, please contact a sales representative or visit the contact page on the ROHM website.
EcoSiC
™ is a brand of devices that utilize silicon carbide (SiC) and is attracting attention in the power device field by demonstrating performance even superior to that of silicon (Si). ROHM independently develops technologies essential to the evolution of SiC, from wafer fabrication and production processes to packaging and quality control methods. At the same time, we have implemented an integrated production system throughout the manufacturing process, solidifying our position as a leading SiC supplier.
TRCDRIVE pack™ and EcoSiC™ are trademarks or registered trademarks of ROHM Co., Ltd.
*ROHM Study of June 11, 2024
