ROHM Unveils High-Performance MOSFET for AI Servers with Best-in-Class SOA and Low ON-Resistance

ROHM Semiconductor has introduced the RY7P250BM, a 100V power MOSFET specifically engineered for hot-swap circuits in 48V power architectures commonly deployed in AI servers and industrial power supplies that require battery protection. As AI continues to evolve at a rapid pace, data centers are encountering exceptional computational demands, resulting in a steady annual rise in server power consumption. The increased adoption of generative AI technologies and high-performance GPUs has intensified the need to enhance power efficiency while supporting elevated current levels.

To meet these growing requirements, the industry is undergoing a transition from traditional 12V systems to more efficient 48V architectures. In these advanced systems, hot-swap circuits—used to safely exchange modules while servers remain operational—require MOSFETs that combine a wide Safe Operating Area (SOA) with low ON-resistance, ensuring protection from inrush currents and overload conditions.

The RY7P250BM meets these stringent demands by integrating these essential features into a compact 8080-size package, helping reduce power dissipation and thermal management burdens in data centers. This, in turn, enhances server reliability and overall energy performance. As demand for 8080-size MOSFETs continues to grow, this product serves as a convenient drop-in replacement for existing solutions.

Notably, the RY7P250BM achieves an expansive SOA (VDS=48V, Pw=1ms/10ms), which is optimal for hot-swap applications. In addition, the device offers an industry-leading ON-resistance of just 1.86mΩ (VGS=10V, ID=50A, Tj=25°C)—approximately 18% lower than the typical 2.28mΩ found in comparable 100V wide SOA MOSFETs of the same size—thereby minimizing power loss and thermal generation.

A wide SOA is especially vital in hot-swap circuits found in AI servers, where high inrush currents are frequently encountered. The RY7P250BM is designed to handle these challenges effectively, withstanding 16A at 10ms and 50A at 1ms, enabling it to support high-load conditions that conventional MOSFETs are often unable to manage. This advanced capability positions the RY7P250BM as a key component in power designs where resilience and performance are paramount.

Furthermore, the RY7P250BM has been certified as a recommended component by a major global cloud platform provider, paving the way for its widespread integration into next-generation AI server infrastructure. Its combination of wide SOA tolerance and ultra-low RDS(on) has earned high praise, particularly in applications where energy efficiency and long-term reliability are critical to cloud-based systems.

Looking ahead, ROHM plans to broaden its portfolio of 48V-compatible power devices tailored for server and industrial applications. By doing so, the company aims to drive progress toward more sustainable ICT infrastructure while delivering enhanced energy savings and operational dependability through high-performance power solutions.

Application Examples

• 48V AI server systems and power supply hot-swap circuits in data centers
• 48V industrial power systems for applications such as forklifts, power tools, robots, and fan motors
• Battery-operated industrial equipment, including Automated Guided Vehicles (AGVs)
• Uninterruptible Power Supplies (UPS) and battery backup systems for emergency power