By 2030, the global power semiconductor market is expected to expand to over 40 trillion won, and the market for oxide power semiconductors such as SiC, GaN, and Ga2O3 is also expected to grow significantly.

Japan's Fuji Economic Daily recently published the results of a survey on the current status and future prospects of the power semiconductor market.

According to the announcement, sales of silicon power semiconductors in 2020 were 2.7529 trillion yen, a 4.0% decrease from the previous year, but are projected to reach 3.7981 trillion yen in 2030, a 38% increase from 2020. Sales of next-generation power semiconductors such as SiC, GaN, and Ga2O3 were projected to reach 51.4 billion yen in 2020, a 9.6% increase from the previous year, but are projected to reach 249 billion yen, a 4.8-fold increase, in 2030.

Additionally, the combined size of the power semiconductor market is expected to reach 4.0471 trillion yen in 2030, a 44.3% increase compared to 2020.

In 2020, the silicon power semiconductor market was booming in the information and communication equipment sector, including server power supplies, due to the spread of telework, but industrial equipment and It recorded significant negative growth due to the slump in the automobile and electrical equipment sectors.

Furthermore, looking at the region, Japan, North America, Europe, and Asia excluding China recorded negative growth, but China saw a recovery and increased demand in the second half of 2020.

After 2021, the market is expected to expand due to advancements in automotive electrification, increased investment in 5G communications, and recovering demand in the industrial sector.

SiC power semiconductor sales in 2020 reached 49.3 billion yen, a 110% increase year-on-year. This is projected to grow to 185.9 billion yen by 2030, a 3.8-fold increase from 2020. However, despite this growth, SiC power semiconductors are estimated to account for less than 5% of the silicon power semiconductor market.

Future demand drivers are expected to be increased demand for DC-DC converters, onboard chargers, and inverter modules due to the electrification of automobiles.

Additionally, the market is expected to expand to Europe and other regions in the future, as North America has a high proportion of Tesla's electric vehicles (EVs) exclusively, but other automakers are also expected to adopt them.

Sales of GaN power semiconductors reached 2.2 billion yen in 2020, up 116% year-on-year, and are projected to reach 16.6 billion yen in 2030, a 7.5-fold increase from 2020.

Demand for AC adapters in 2020 also showed a positive trend in the information and communication equipment sector, including server power supplies. Market growth is expected to continue, driven by increased demand for base stations due to the proliferation of data centers and 5G, and advancements in adoption in the automotive and electrical sectors are also expected after 2022.

In addition, the gallium oxide (Ga2O3) power semiconductor market, which is currently undergoing research and development, is expected to reach a market size of 46.5 billion yen by 2030, exceeding that of GaN power semiconductors.

Compared to SiC and GaN, it has superior performance, such as high voltage and low loss, and can be reduced in cost, so early commercialization has been anticipated, but it has not yet reached mass production.