Infineon Technology has launched a series of advanced power modules (PSUs) designed specifically for artificial intelligence data centers. The power range of these PSUs ranges from 3 kW to 12 kW, achieving extremely high efficiency using new semiconductor technology.

Gain a deeper understanding of Infineon's 8-kilowatt AI power module

This 8 kW PSU solution adopts a hybrid switching method and integrates three types of semiconductors: silicon carbide (SIC), gallium nitride (GaN), and silicon. The strategic application of each material optimizes performance. SiC is used for bridge free totem pole power factor correction (PFC) because its RDS (on) has a lower temperature coefficient, which improves efficiency at high temperatures. GaN transistors are used in high-frequency full bridge resonant converters (LLC), as their lower capacitance results in higher switching frequency and increased power density. Silicon devices are used in areas with minimal switching losses, providing low RDS (on).

Key components include CoolSiC mosfet (650V), CoolGaN transistor (650V), CoolMOS 8 SJ MOSFET (600V), CoolSiC Schottky diode (650V), and OptiMOS 5 power MOSFET (80V). In addition, ISOFACE and various EiceDRIVE components also contribute to the high performance and safety of PSUs.

Efficiency

PSU achieved a benchmark efficiency of 98%, reduced cooling requirements, and improved overall system reliability. Its power density reaches up to 100 W/in ³, twice the ORv3 specification, making it compact in size and suitable for modern AI rack infrastructure. The PSU uses a single-phase high-voltage power grid input, ranging from 180 VAC to 305 VAC, with a nominal output of 50 VDC. It can provide a current of up to 160A and a maximum output power of 8 kW, which is sufficient to meet the needs of high-power artificial intelligence applications.

Power management

This PSU adopts full digital control to manage interleaved bridge free totem pole PFC and full bridge LLC, enhancing the accuracy and flexibility of power management, ensuring optimal performance under different load conditions. The proprietary and integrated magnetic design further optimizes the efficiency and performance of the PSU. In order to meet strict hold time requirements while maintaining high power density, the PSU integrates an auxiliary boost circuit. This circuit utilizes intermediate energy storage to reduce the need for bulky capacitors and improve system reliability.

Addressing AI needs

As the proportion of AI workloads in data center computing increases, developers need more efficient and efficient power supply. Infineon's new generation AI PSU has taken a step towards solving this problem by cleverly utilizing the advantages of silicon, SiC, and GaN in the same device. This solution can adapt to the growing energy demand of AI applications, allowing data centers to freely adapt to future needs while maintaining energy efficiency, reducing environmental impact.

Faust Technology focuses on the field of power devices, providing customers with power devices such as IGBT and IPM modules, as well as MCU and touch chips. It is an electronic component supplier and solution provider with core technology.