Infineon releases 12 kW PSU reference design
Infineon Technologies is introducing a 12 kW reference design for high-performance power supply units (PSUs), specifically designed for AI data centres and server applications.
The reference design uses silicon, SiC and GaN technologies and is aimed at R&D engineers, hardware designers, and developers of power electronics systems.
“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, SVP and general manager Power Switches at Infineon.
To achieve high-performance levels, the design uses advanced power conversion topologies in both the AC/DC and DC/DC power 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 is achieved by Infineon’s CoolSiC technology.
The isolated DC/DC converter features a full-bridge LLC resonant converter and offers peak efficiency above 98.5 percent, enabled by using two planar high-frequency transformer and Infineon’s CoolGaN technology. These architectures, combined with Infineon’s latest wide-bandgap technologies, achieve a power density of up to 113 W/in³.
Another key feature of the 12 kW PSU reference design is the bidirectional energy buffer, which is integrated into the overall power supply topology. According to the company, this converter enables compliance with hold-up time requirements while significantly reducing capacitance requirements. Furthermore, the energy buffer provides a grid-shaping function, improving system reliability and limiting both fluctuations and the rate of change of power drawn from the grid during transient events.
