Global hyperscale data center construction is entering a phase of rapid expansion, with computing density and overall energy consumption increasing simultaneously. As the global transition toward green energy accelerates, data centers, key infrastructure of the digital economy, are facing growing demands for large-scale deployment and system upgrades. As a result, power supply systems are required to deliver higher efficiency, stability, and intelligence.

In this context, AI server power supplies (PSUs) are evolving from traditional power conversion units into intelligent energy management hubs that enable efficient conversion from “watts” to “bits.” Their primary objective is to maximize effective computing output per unit of electricity through high-efficiency energy management and real-time dynamic control. This capability directly affects data center operating costs and has become a critical indicator of system performance and competitiveness.

G32R501 Real-Time DSP/MCUs 

Enable Energy Efficiency Upgrades for AI Server Power Supplies

In 2025, the 80 PLUS® program introduced the new Ruby efficiency tier, further accelerating performance upgrades in AI server power supplies. This new standard emphasizes comprehensive improvements in both power conversion efficiency and power density.

The Geehy G32R501 real-time DSP/MCUs deliver high computational performance, precise real-time control, and intelligent energy management, making it well-suited for AI server PSU applications. Using a single G32R501 device with a three-phase interleaved totem-pole PFC and LLC resonant converter topology, the solution achieves high efficiency and high power factor across the full load range. It provides strong technical support for improving efficiency and power density while helping power products meet the 80 PLUS® Ruby standard.

AI Server Power Supplies Based on G32R501

Key Application Advantages

AI Server Power Supplies Based on G32R501 

Core Application Architecture

The G32R501 real-time DSP/MCUs support a two-stage power topology and meet the power requirements of 7kW–11 kW AI server power supplies.

• Front stage: Three-phase interleaved totem-pole PFC, using GaN or SiC MOSFETs in the high-frequency bridge.

• Back stage: Two parallel full-bridge LLC resonant converters; GaN or SiC MOSFETs on the high-voltage side, and low-RDS(on) MOSFETs on the low-voltage side for synchronous rectification.

• The G32R501 integrates eight 12-bit ADC channels for real-time sampling of input voltage, inductor current, bus voltage, and output voltage/current.

• Input: 90V–264V AC, output: 45V–58V DC, rated output current: 140 A.

AI Server Power Supply Topology Diagram

Key Advantages of the Geehy

G32R501 Real-Time DSP/MCUs

The Geehy G32R501 real-time DSP/MCUs integrate a rich set of high-performance IPs, including high-resolution PWM, COMP, and CAP modules, optimized for high-accuracy and high-power-density power applications. The platform supports multiple power topologies, fast dynamic response, and active power management, enabling AI server power supplies to achieve substantial gains in efficiency and power density. Looking ahead, Geehy will continue to advance power control technologies and product innovation, delivering high-performance, high-reliability solutions to support AI infrastructure development and the global green energy transition.