[News] AI Server and Humanoid Robot, New Drivers for GaN Industry

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In recent years, data center has been one of the key areas for GaN (Gallium Nitride) manufacturers to tap power electronics market, and GaN applications in the data center power supply market have taken a big step forward. Notably, the rise of AI technology has further fueled this market at present.

In the AI ecosystem, data centers have enormous demands for high-speed computing and power. According to a TrendForce report, NVIDIA’s Blackwell platform will be officially launched in 2025, replacing the existing Hopper platform, and will become NVIDIA’s primary solution for high-end GPU, accounting for nearly 83% of all high-end products.

For high-performance AI servers like the B200 and GB200, a single GPU can consume more than 1,000W of power.

Facing soaring power demands, the power specifications for each data center rack will increase from 30-40kW to 100kW, posing significant challenges for data center power systems. The combination of GaN and liquid cooling technologies will be critical to improving energy efficiency in AI data centers.

The hike in chip power consumption requires servers to achieve higher power density and efficiency.

GaN, which reduces energy losses and increases power density, is now seen as one of the key technologies for optimizing energy efficiency in AI data centers, which has attracted many players, including Infineon, Texas Instruments (TI), Navitas, Innoscience, Transphorm, CorEnergy, Danxi Tech, and GaNext, to join the race.

Among them, both Navitas and Infineon have unveiled their AI data center power roadmaps.

Combining the unique advantages of Si (Silicon), SiC (Silicon Carbide), and GaN (Gallium Nitride), Infineon has launched a 3 kW PSU and a 3.3 kW PSU, with an 8 kW PSU expected to be available in the first quarter of 2025.

The new 8 kW PSU will support AI racks with outputs of up to 300 kW or more. Compared to the 32 W/in³ density of the 3 kW PSU, its efficiency and power density will increase to 100 W/in³, further reducing system size and lowering operator costs.

In terms of GaN technology, Infineon’s CoolGaN™ solution can provide over 99% system efficiency in PFC topologies. Moreover, GaN Systems, acquired by Infineon, already released a 3.2kW AI server power supply as early as 2022 and unveiled its fourth-generation GaN platform in 2023.

The new platform achieves efficiency exceeding the Titanium level, with power density increased from 100W/in³ to 120W/in³. Thereby, the industry highly expects the synergistic effect created by the combination of these two companies.

Navitas introduced its GaNSafe™ and Gen-3 Fast SiC technology last year, along with a 4.5kW CRPS design, achieving more than double the power density of traditional silicon solutions. In July this year, Navitas unveiled its CRPS185 4.5kW AI data center server power solution, with a power density of 137W/in³ and over 97% efficiency.

Navitas revealed that over 60 customer projects involving 3.2kW and 4.5kW power solutions for data centers are currently under development.

These projects are expected to bring millions of dollars in revenue growth for Navitas’ GaN and SiC business between 2024 and 2025. It aims to begin small-scale production of AI data center power solutions in 2024.

Aside from Infineon and Navitas, other manufacturers like TI, EPC, CorEnergy, GaNext, and Innoscience also set sights on this market.

TI reached an agreement with Delta, the world’s largest server power supply provider (with nearly 50% market share), as early as 2021. Based on GaN technology and TI’s C2000™ MCU real-time control solution, they are developing high-efficiency, high-power server PSU for data centers.

Thus, their joint efforts and future fruit in the AI server power market are highly anticipated.

Beyond AI data center server, humanoid robot industry that enjoys burgeoning growth this year, also injects new vitality into the GaN market.

Humanoid robot is assembled by sensing, control, motor, and battery systems, in which GaN can has its place in LiDAR system, motor drive, DC-DC converter, and battery BMS, among which motor drive plays a critical role.

According to TrendForce, the demand for motor driver in humanoid robot has skyrocketed due to the mounting demands for degrees of freedom.

To achieve higher power output, high-power-density, high-efficiency, and fast-response motor driver are in demand, and GaN is a perfect fit for it, which also has the ability to strengthen overall robot performance in terms of heat management, compact design, and overall system design.

It is reported that Siemens, Yaskawa Electric, and Elmo have already integrated GaN technology into their robotic motors, and the GaN industry chain is gearing up for seizing more opportunities.

Currently, companies such as TI, EPC, Transphorm, Innoscience, Navitas, and CorEnergy are actively promoting GaN adoption in motor drive market. Among them, Transphorm has supplied GaN FET products for Yaskawa Electric’s new servo motor.

TrendForce points out that future robots will exceed our imagination, with precise, fast, and powerful movement capabilities as the key parts, which will inevitably push the motors required to drive these movements advance forward, and this is regarded as a boon for GaN technology.

Read more

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(Photo credit: Infineon)