Due to the rapid development trend of new energy vehicles, the main use of gallium nitride is slowly broadening to chargers, automotive inverters and millimeter-wave radars. Recently, the secretary of Wentai Technology's board of directors mentioned in the financial platform's response to investors' questions that Nexperia has released advanced gallium nitride power electronic equipment in the field of application fields such as pure electric vehicles, big data centers, and high-end switching power supplies.

According to the forecast and analysis of Alibaba Damo Academy, the third-generation semiconductor materials symbolized by gallium nitride and carbon-carbon composite materials will explode in 2021 . According to published information, the 2020 gallium nitride sales market will be mainly used in industries such as optics, radio frequency, and power electronics technology. Among them, the optical industry accounts for 68% of the gallium nitride sales market, with a market capacity of about 22.47 billion yuan. The RF and power electronics technology industries each account for 20% and 10% of the GaN sales market. The efficient heat transfer of gallium nitride goes well beyond the properties of silicon-based components. Judging from the current sales market share, the market penetration rate of gallium nitride in the power electronics technology industry is low, and there is a large room for development trends, especially in industries such as power adapters and wireless fast charging technology. Due to the rapid development trend of new energy vehicles, the main use of gallium nitride is slowly broadening to chargers, AOD476 automotive inverters and millimeter-wave radars.

Advantages of GaN in Vehicles, Current Status

With the development trend of vehicle electrification and intelligent systems, pure electric vehicles have more stringent requirements for high efficiency and high power. The application of GaN electronic devices can not only reduce the indoor space share, but also improve power and vehicle durability, providing users with a better driving experience. Compared with carbon composites, gallium nitride has a higher switching frequency for power supply, because gallium nitride has a higher electron density of electronic devices, so the off time is basically zero, and the switching losses are relatively small. At the same time, the heat treatment process of gallium nitride has high working capacity and power. The application of gallium nitride components can improve the high efficiency of output power conversion and reduce the cost of rechargeable batteries.

Nanowei mentioned at the industry conference that compared with the traditional car cut-off household appliances, the battery charging rate of gallium nitride chargers has been increased by more than 60%. When the volume of the two charging heads is the same, the battery charging rate of the gallium nitride charger can be increased by nearly 3 times, and the net weight can be significantly reduced.

In the application of the vehicle industry, in order to reduce the volume of the on-board inverter and improve its characteristics, most power electronic devices use gallium nitride and carbon-carbon composite materials. At this stage, the price of gallium nitride is about three times that of silicon-based components, and the price of carbon-carbon composite materials is about 10 times that of silicon-based components. Gallium nitride is more advantageous in terms of cost, because gallium nitride and carbon-carbon composite materials have the characteristics of high frequency, low pass, and no loss.

Nexperia Automotive 650V Gallium Nitride Power Electronic Equipment

Nexperia has a big say in automotive-spec power electronics. Nexperia has been working in the vehicle industry for many years and has accumulated rich technologies. It has several wafer production lines that have been verified by strict vehicle specifications, and continuously improves production lines and expands production capacity. With strong technology accumulation, Nexperia Automotive Power MOSFET ranked second in the world in 2019, second only to Infineon.

In 2019, Nexperia first released an industry-leading gallium nitride power electronic device. Recently, the secretary of Wentai Technology's board of directors mentioned in the financial platform's response to investors' questions that Nexperia has released advanced gallium nitride power electronic equipment in the field of application fields such as pure electric vehicles, big data centers, and high-end switching power supplies. In the reply, it is necessary to pay attention to the application of gallium nitride in the inverter power supply of traction belts of new energy vehicles, and indicate that gallium nitride products with a rated voltage of 650V have been tested according to vehicle regulations.

Figure: On-resistance measurement during HTRB

GAN063-650 model">GAN063-650 model">GAN063-650 model">GAN063-650 model">GAN063-650 model">GAN063-650 model">GAN063-650WSA is Nexperia's gallium nitride power electronic device , the rated voltage is 650V, and the on-off resistance is 50mΩ. In order to prevent the peak working voltage from being too high in specific applications, penetrating electronic equipment and causing power circuit failure, Anshi has increased the electrical conductor to 800V model">800V model">800V model">800V model">800V model">800V, and at the same time The surge voltage (1.3V/12A) is low, which further maintains the reliability of the design work. It can work under the temperature condition of -55℃ to 175℃, which can effectively meet the temperature requirements of vehicles. It is mainly used for vehicle switching power supplies. The inverter power supply of the conversion and traction belt. The picture shows the verification test results of GAN063-650WSA at the operating voltage of 650V, the temperature of 175℃, and the AEC-Q101Revd grade under the extreme operating state. According to the test data, GaN power electronic equipment The maximum offset of the dynamic on-off resistance is less than 15%, which is much smaller than the 20% offset of the AEC-Q101 Revd grade.

Figure: 1000 hours of efficiency test results

The picture shows the detection results of GAN063-650WSA running continuously for 1000 hours. It can be seen from the main parameters that the conversion efficiency is close to 98%, and the conversion efficiency is maintained for a long time within 1000 hours, which is in line with the AEC-Q101 vehicle regulation verification requirements.

Judging from the above high temperature, high pressure and high-efficiency test results, Nexperia's gallium nitride products are stable at work and nearly 98% high-efficiency conversion, which is very suitable for the vehicle industry and improves the energy consumption level of vehicles. According to news media reports, Nexperia has developed and designed gallium nitride components with a rated voltage of 900V, and there will be 1200V models in the future ">1200V models">1200V models">1200V models">1200V models">1200V models"> The solution for 1200V products focuses on getting rid of the low-voltage application of gallium nitride products in China.

Navitas Semiconductor's Auto Trading Market Layout is Reasonable

Nano Micro is the only gallium nitride company in the world offering thorough plans from 20W to 20KW. Recently, Electronic Enthusiasts Network learned that Nano Micro Semiconductor will enter the vehicle industry and expand the application of gallium nitride in vehicles. In the fourth quarter of 2021, Nanowei opened an R&D center in Shanghai dedicated to pure electric vehicle-related products, and continued to develop and expand the R&D department of China Guangfa Bank's hero post battery car products.

Summarize

Gallium nitride promotes the development trend of the power engineering electronics industry. In the application of OBC, the commodity volume can be reduced to 20% of the original, and the battery charging efficiency can be increased to 98%. In DC/DC applications, the power can also be doubled. With the development trend of new technologies, the rated voltage of gallium nitride power electronic devices may increase, and the development prospects of future vehicles are very promising.