Infineon Technologies has launched a 27 kW three-phase PSU reference design for server ODMs and OEMoriginal equipment manufacturers building next-generation AIartificial intelligence infrastructure. The design addresses the shift toward 800 VDC1. volts direct-currentElectrical quantity used to describe or test circuit operating behavior.2. volts direct currentVDC denotes a direct-current voltage level used for power distribution and conversion. or ±400 VDC1. volts direct-currentElectrical quantity used to describe or test circuit operating behavior.2. volts direct currentVDC denotes a direct-current voltage level used for power distribution and conversion. power architectures, which is being driven by higher GPUgraphics processing unitA GPU is a parallel graphics processor widely used for AI acceleration. performance and rising rack density in modern data centers.
The solution is aligned with the OCPOpen Compute Projectan initiative for the standardization and open design of data center hardware Open Rack V3 specification and AIartificial intelligence server rack requirements. Infineon positions it as part of a broader portfolio for powering AIartificial intelligence servers and as a way to shorten time-to-market while improving power density, efficiency and thermal performance.
Technically, the design combines 650V CoolSiC and CoolMOS MOSFET1. metal-oxide semiconductor field effect transistorVoltage-controlled field-effect transistor with an insulated gate, widely used in integrated circuits.2. metal-oxide-semiconductor field-effect transistorA common transistor type used here as the layout and technology reference.s, EiceDRIVER gate drivers, XENSIV current sensors and PSOC microcontrollers. It uses a five-level ANPC PFC1. perfluorocompoundFully fluorinated chemical compound, often highly chemically resistant.2. perfluorocarbonFully fluorinated carbon compound, sometimes used as process gas and often a potent greenhouse gas. stage together with a three-level LLC converter. At 480 VACvolts alternating currentElectrical quantity used to describe or test circuit operating behavior. input and 50% load, the reference design reaches more than 98% peak efficiency and a power density of 116 W/in³, above the ORV3 minimum of 94 W/in³.
An integrated energy buffer provides 20 ms hold-up time during short grid disturbances and smooths line-voltage dips caused by rapid GPUgraphics processing unitA GPU is a parallel graphics processor widely used for AI acceleration. load changes. This removes the need for a separate capacitor bank unit. A planar magnetic structure supports a compact, modular and scalable high-frequency transformer design.
The PFC1. perfluorocompoundFully fluorinated chemical compound, often highly chemically resistant.2. perfluorocarbonFully fluorinated carbon compound, sometimes used as process gas and often a potent greenhouse gas. and LLC stages are digitally controlled for fast response to AIartificial intelligence load transients. A programmable power control accelerator inside the PSOC Control C3 Performance Line microcontroller handles precise current and voltage regulation. The design accepts three-phase input from 311 to 528 VACvolts alternating currentElectrical quantity used to describe or test circuit operating behavior., supports low input-current total harmonic distortion, and maintains a power factor above 0.99 across most of the operating range. Ambient operation is specified from -5°C to 45°C.