ROHM plans to combine its in-house GaN power device development and manufacturing expertise with the process technology of its partner, TSMC, to create a fully integrated production system within the ROHM Group. By licensing TSMC’s GaN technology, ROHM aims to boost its supply capacity to meet increasing demand in sectors like AI servers and electric vehicles.
GaN power devices are known for their high-voltage and high-frequency performance, which enhances efficiency and allows for smaller, more compact designs. They are already widely used in consumer electronics, such as AC adapters, and their adoption is growing in high-voltage applications, including AI server power units and EV on-board chargers, with demand expected to rise further.
ROHM began developing GaN power devices at an early stage and established a mass-production system for 150V GaN at ROHM Hamamatsu in March 2022. In the mid-power range, ROHM has built its supply structure while advancing external collaborations. One of the key partners in this effort has been TSMC: ROHM has adopted a 650V GaN process since 2023, and in December 2024, the two companies entered into a partnership related to automotive GaN*1, further deepening their collaboration.
This latest integration represents an evolution of that partnership. Under a newly concluded license agreement, TSMC’s process technology will be transferred to ROHM Hamamatsu. ROHM aims to establish the production system in 2027 to meet expanding demand in applications such as AI servers.
Upon completion of the technology transfer, ROHM and TSMC will amicably conclude their automotive GaN partnership. At the same time, the two companies will continue to strengthen collaboration for higher efficiency and more compact power supply systems.
