Infineon introduces 27 kW three-phase PSU solution for next-generation AI server power architectures

What happened

Infineon Technologies AG is launching a 27 kW three-phase power supply unit (PSU) solution for server ODMs and OEMs, addressing the shift toward 800 VDC or ±400 VDC power supply architectures in data centers driven by AI workloads, increasing GPU performance and rising rack densities. The reference design meets the OCP Open Rack V3 (ORV3) specification and AI server rack architectures. It combines Infineon components including 650V CoolSiC and CoolMOS MOSFETs, EiceDRIVER gate drivers, XENSIV current sensors, and PSOC microcontrollers. It achieves a peak efficiency of more than 98 percent at an input voltage of 480 VAC and 50 percent load; uses a five-level ANPC PFC topology and a three-level LLC converter, reaching a power density of 116 W/in³ versus the ORV3 minimum requirement of 94 W/in³; and an integrated energy buffer provides a hold-up time of 20 milliseconds during short power grid disturbances. The design supports a three-phase input voltage range of 311 to 528 VAC, a power factor above 0.99 across most of the load operating range, and operation at ambient temperatures from -5°C to 45°C. Background: Infineon had around 57,000 employees worldwide (end of September 2025) and generated revenue of about €14.7 billion in the 2025 fiscal year (ending 30 September).

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Source and time

Source: EE Journal · 10/12/2026 · View original source