Infineon Power Semiconductors: Enabling High-Efficiency UPS Systems
The growth of IoT, cloud computing, and global data centers has driven increasing demand for reliable uninterruptible power supply (UPS) systems. Infineon Technologies provides comprehensive power semiconductor solutions for both online and offline UPS architectures, enabling high efficiency, superior power density, and reliable power backup for critical infrastructure.
UPS System Architecture and Semiconductor Requirements
UPS systems provide instant backup power during outages while filtering voltage spikes, drops, and noise. Online UPS systems, which directly connect AC mains power with no transfer time, are essential for medical equipment, servers, and other applications requiring continuous power. Offline UPS systems with high-frequency transformers (50-60kHz ferrite cores) or low-frequency transformers (20-50Hz iron cores) serve small office and home office applications. Each architecture has distinct semiconductor requirements.
Infineon Power Module Solutions for UPS
For high-power UPS systems, Infineon offers EasyPACK HD3 and EasyPACK S power modules that integrate multiple power switches in a single package. These modules feature 1200V and 1700V CoolSiC MOSFET technology for the highest efficiency designs, as well as 600V and 1200V TRENCHSTOP IGBT options for cost-optimized solutions. The modular approach supports the trend toward modular UPS units in data centers, where scalability and serviceability are critical.
CoolSiC and CoolMOS for UPS Power Stages
CoolSiC MOSFETs enable the transition from two-level to three-level UPS topologies, achieving higher efficiency and power density. CoolMOS superjunction MOSFETs (600V CFD7 series) provide optimized performance for PFC stages and auxiliary power circuits. The Thin-PAK 8×8 CoolMOS package offers excellent thermal performance in a compact form factor. For rectifier stages, 650V Rapid 1 and Rapid 2 silicon diodes provide reliable and cost-effective solutions.
AI Server and Data Center Power Solutions
Beyond traditional UPS, Infineon addresses the rapidly growing AI server power supply market. Reference designs demonstrate 3kW to 12kW power supply units achieving 97.5% peak efficiency and power densities up to 100 W/in3. These designs leverage the unique combination of CoolSiC (silicon carbide), CoolGaN (gallium nitride), and CoolMOS (silicon superjunction) technologies, with bridgeless totem-pole PFC and LLC resonant converter topologies. Full digital control is implemented using XMC microcontrollers.
Complete UPS System Integration
Infineon provides all necessary components for complete UPS system integration. EiceDRIVER gate drivers ensure reliable power switch operation, XMC microcontrollers handle control and power conversion algorithms, and AIROC Wi-Fi and Bluetooth combo chips enable stable connectivity for remote monitoring and management. This integrated approach helps UPS manufacturers reduce development time while achieving superior system performance and reliability for critical power protection applications.
