With the release of a new white paper outlining cutting-edge power solutions for AI data centers based on the innovative 800 VDC architecture, ROHM has reaffirmed its position as a major player in the semiconductor industry that propels system innovation.
The ROHM white paper describes ideal power strategies that facilitate large-scale 800 VDC power distribution throughout AI infrastructure as part of the partnership announced in June 2025.
Included in the white paper are ROHM’s comprehensive power solutions spanning a wide range of power devices and analog IC technologies, supported by thermal design simulations, board-level design strategies, and real-world implementation examples.
Key Highlights of the ROHM White Paper
- Rising Rack Power Consumption: Power demand per rack in AI data centers is rapidly increasing, pushing conventional 48V/12V DC power supply systems to their limits.
- Shift to 800 VDC: Transitioning to an 800 VDC architecture significantly enhances data center efficiency, power density, and sustainability.
- Redefined Power Conversion: In the 800 VDC system, AC-DC conversion (PSU), traditionally performed within server racks, is relocated to a dedicated power rack.
- Essential Role of SiC and GaN: Wide bandgap devices are critical for achieving efficient performance. With AC-DC conversion moved outside the IT rack, higher-density configurations inside the IT rack can better support GPU integration.
- Optimized Conversion Topologies: Each conversion stage—from AC to 800 VDC in the power rack and from 800 VDC to lower voltages in the IT rack—requires specialized solutions. ROHM’s SiC and GaN devices contribute to higher efficiency and reduced noise while decreasing the size of peripheral components, significantly increasing power density.
- Breakthrough Device Technologies: ROHM’s EcoSiC™ series offers industry-leading low on-resistance and top-side cooling modules ideal for AI servers, while the EcoGaN™ series combines GaN performance with proprietary analog IC technologies, including Nano Pulse Control™.?This allows for stable gate drive, ultra-fast control, and high-frequency operation–features that have earned strong market recognition.
T
he shift to 800 VDC infrastructure is a collective industry effort. ROHM is working closely with NVIDIA, data center operators, and power system designers to deliver essential wide bandgap semiconductor technologies for next-generation AI infrastructure.
Through strategic collaborations, including a 2022 partnership with Delta Electronics, ROHM continues to drive innovation in SiC and GaN power devices, enabling powerful, sustainable, and energy-efficient data center solutions.
To Download The ROHM White Paper, CLICK HERE
