Infineon Technologies AG has announced the launch of a 12 kW reference design for high-performance power supply units (PSUs), tailored to meet the growing energy demands of AI data centers and server applications. The new PSU design sets benchmarks in efficiency, reliability, and power density, making it a valuable resource for R&D engineers, hardware designers, and power electronics developers.
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“In the ongoing quest of the increased energy demand of artificial intelligence, Infineon’s contribution is to provide power solutions with the highest conversion efficiency to preserve every single possible Watt,” said Richard Kunčič, Senior Vice President and General Manager Power Switches at Infineon. “Our new 12 kW high-density power supply unit reference design is using advanced power conversion topologies and therefore utilizing CoolMOS, CoolSiC and CoolGaN which allows the PSU to release the full potential in energy efficiency, reliability, and power density. We are proud to be at the forefront of powering AI.”
To achieve exceptional performance, the 12 kW PSU reference design employs advanced power conversion topologies across both the AC/DC and DC/DC stages. The front-end AC/DC converter features a 3-level flying capacitor interleaved power factor correction (PFC) topology, delivering peak efficiency above 99.0 percent while reducing magnetic component volume. This performance is enabled by Infineon’s CoolSiC technology, which delivers outstanding switching performance and superior thermal characteristics. On the DC/DC side, the design employs a full-bridge LLC resonant converter, reaching over 98.5% efficiency through the use of dual planar high-frequency transformers and Infineon’s CoolGaN technology. Together, these advanced architectures and Infineon’s wide-bandgap semiconductor innovations deliver an impressive power density of up to 113 W/in³.
Another standout feature of the 12 kW PSU reference design is its integrated bidirectional energy buffer. This converter ensures compliance with hold-up time requirements while dramatically reducing capacitance needs, resulting in a more compact and efficient design. In addition, the energy buffer delivers a vital grid-shaping function, enhancing overall system reliability, minimizing fluctuations, and stabilizing power draw during transient events.
