Infineon Technologies (Korea CEO Seungsoo Lee), a global semiconductor company, is responding to the energy demands of the AI era with a high-efficiency power supply unit (PSU) featuring a high-performance architecture implemented with an advanced power conversion topology.

Infineon recently announced a high-performance 12kW power supply unit (PSU) reference design for AI data centers and server applications.

This design utilizes various semiconductor materials such as silicon (Si), silicon carbide (SiC), and gallium nitride (GaN) to achieve high efficiency and power density, providing an optimal solution for power electronics system developers and hardware designers.

“To address the increasing energy demand driven by the explosive growth of AI, Infineon is delivering power solutions with the highest conversion efficiency to save every possible watt,” said Richard Kuncic, Senior Vice President and General Manager of Infineon’s Power Switches Division.

“This 12kW PSU design, based on CoolMOS™, CoolSiC™, and CoolGaN™ technologies, maximizes the potential for energy efficiency, reliability, and power density,” he continued.

This PSU is AC/DC and DC/DC Advanced power conversion topologies were applied to all power stages.

The front-end AC/DC converter adopts a three-level flying capacitor interleaved power factor correction (PFC) structure to achieve a peak efficiency of over 99.0%, and the size of magnetic components is reduced to increase space efficiency.

This is thanks to the high switching performance and excellent thermal characteristics achieved through Infineon's CoolSiC technology.

The isolated DC/DC converter is based on a full-bridge LLC resonant converter architecture and utilizes two planar transformers and CoolGaN technology to deliver peak efficiency exceeding 98.5%.

This architecture, combined with the latest wide bandgap technology, achieves a power density of up to 113 W/in³.

Another key feature of this design is a bidirectional energy buffer integrated into the overall power supply topology.

This converter significantly reduces capacitance requirements while meeting hold-up time requirements and improves system reliability through its grid-forming capability.

In case of a transient phenomenon, it ensures a stable power supply by limiting the volatility and rate of change of power drawn from the grid.

An Infineon official said, “Infineon’s 12kW PSU reference design meets the power efficiency and density required in AI and high-performance computing environments, and is expected to play a key role in building next-generation data center infrastructure.”

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