Infineon Debuts 27 kW PSU Reference Design for AI Server Racks
Infineon has launched a 27 kW three-phase power supply reference design aimed at AI server ODMs and OEMs, with compliance for OCP Open Rack V3. The unit combines 650V CoolSiC and CoolMOS MOSFETs, EiceDRIVER gate drivers, XENSIV current sensors, and PSOC microcontrollers, reaching over 98% peak efficiency and 116 W/in³ power density. It supports 800 VDC or ±400 VDC architectures and uses digital control to handle rapid GPU load changes.
Infineon’s new reference design is aimed at server ODMs and OEMs building AI racks, and it conforms to the OCP Open Rack V3 specification. It combines 650V CoolSiC and CoolMOS MOSFETs, EiceDRIVER gate drivers, XENSIV current sensors, and PSOC microcontrollers.
The unit uses a five-level ANPC PFC stage and a three-level LLC converter. It supports 800 VDC or ±400 VDC architectures, 311–528 VAC three-phase input, and ambient temperatures from -5°C to 45°C. Peak efficiency exceeds 98% at 480 VAC and 50% load, with 116 W/in³ density and 20 ms hold-up.
More efficient, denser power supplies for AI racks could help data-center operators fit more computing into existing facilities while reducing wasted heat. That may affect cloud providers, AI developers, and electricity users near large campuses, though actual benefits depend on deployment and grid conditions. The design’s support for multiple voltage architectures may ease transitions, but it is a reference design, so societal effects will likely emerge only if ODMs and OEMs adopt it broadly.