The global new energy vehicle (NEV) industry has grown by leaps and bounds over the past two years, especially in Chinese markets where 6.46 million NEVs were sold in 2022 — an impressive 89.5% YoY growth. The penetration rate of NEVs jumped from 14.3% in 2021 to 25.6% in 2022.

The global automotive MCU industry has also grown hand in hand, largely in part due to the explosive growth of NEVs and their tight supply-demand relationship. In 2022, the global automotive MCU market generated US$8.286 billion in revenue — an 11.4% YoY growth. Looking ahead to 2023, the market is predicted to grow 4.35%, reaching a value estimation of US$8.646 billion as a result of continued market expansion and technological advancements in the NEV industry.

Automotive MCUs to undergo a technological and demand revolution

More advanced NEVs will demand higher processing power from MCUs, requiring them to bear heavier performance loads. Foundries such as NXP, Renesas, and Infineon are working to improve the performance of their automotive MCUs through a two-pronged approach: Upgrading the manufacturing process and testing out new forms of storage to prevent a performance bottleneck.

Demand for automotive MCUs will be significantly boosted in the short term as NEVs become more intelligent, functional, complex, and comfortable. In the long-term, the electrical architecture of NEVs plans to shift from a decentralized to a more centralized design, consolidating multiple functions into one domain controller. While this will increase performance loads for MCUs, it also means a fewer number will be needed.

Chinese automotive MCU market experiences boom as domestic production ramps up in the face of a global shortage

China’s automotive MCU market has rapidly expanded in the past three years due to two factors: First, a global shortage has provided Chinese manufacturers an opportunity to break into the market. Especially since China is the world’s largest producer of NEVs, which translates to a higher demand for MCUs than any other region. In the past year alone, 16 Chinese manufacturers have launched their own MCUs; while some are currently in the certification process, others have already entered production.

Second, in the midst of a domestic production boom, an increasing number of Chinese automakers have switched to using domestic MCUs. Domestic NEVs account for more than half of China’s market share, providing Chinese MCU manufacturers with more opportunities to cooperate with Chinese automakers. A number of Chinese automakers have even begun investing in domestic MCU manufacturers.

Over the past three years, the rapid expansion of China’s automotive MCU industry has helped them gain a competitive edge within the market. In the mid- to long-term, China’s MCU market will continue to grow thanks to ramped up domestic production and a thriving NEV market.

TSMC’s Fab14 P7 in the Southern Taiwan Science Park suffered a power outage on April 14th. The cause of the power outage was an accidental severing of an underground power cable during construction work nearby. According to TrendForce’s latest investigations, the facility accounts for around 4% of TSMC’s total 12-inch wafer foundry capacity and around 2% of the global 12-inch wafer foundry capacity, and TSMC is still assessing the exact figures for the wafers that have to be scrapped and the wafers that can be reworked.

According to the latest available information, power was fully restored to the fab site at 7:30 p.m. on April 14th. The diesel uninterruptible power supply (DUPS) of the facility kicked in instantly when the power cable was cut, but there was still a short period of power interruption and voltage drop. As a result, some of the equipment systems in the facility temporarily experienced operational irregularity or malfunction. Based on past experiences with this type of incident, TrendForce believes that it will take 2-7 days to recalibrate the equipment systems so that they can return to normal operation.

For TSMC, this power outage incident has had implications on both revenue and production. With respect to revenue, TrendForce’s own analysis indicates that the disposal of the wafers that are too damaged for rework will bring about a revenue impact of US$10-25 million. This amount represents less than 0.1% of TSMC’s annual total revenue.

On the other hand, with respect to production, the Fab14 P7 facilities contain 45/40nm and 16/12nm production lines, and the outage will primarily impair end products including smartphones and automobiles, since automotive chips, which are in extreme shortage at the moment, are manufactured at the 45/40nm nodes, and 45/40nm capacities are among the most insufficient among all foundry capacities.

TrendForce further indicates that clients whose wafer inputs for automotive MCU and CIS logic products (manufactured at the 45/40nm nodes) are bearing the brunt of the outage’s impact mainly include NXP, Renesas, and Sony. In particular, Sony CIS 40nm Logic products are primarily supplied for high-end smartphones. However, as Sony manufactures these products in its in-house facilities as well, even if TSMC were to fully discard this batch of wafers, Sony’s supplies will remain relatively unaffected in the short run.

On the other hand, after the automotive market entered a gradual recovery in 2H20, automotive MCUs have been in shortage due to automakers’ insufficient inventory. Furthermore, a fire broke out at Renesas’ Naka-based 12-inch fab on March 19, and the fab’s cleanrooms were severely damaged as a result.

As of now, manufacturing operations at the Naka fab have yet to resume. Since TSMC has been allocating some of its production capacities in Fab14 to these products as a substitute for the Naka fab, TrendForce believes that the power outage incident will likely exacerbate the shortage of automotive MCUs going forward.

For more information on reports and market data from TrendForce’s Department of Semiconductor Research, please click here, or email Ms. Latte Chung from the Sales Department at lattechung@trendforce.com