A new class of medium-voltage power modules has been introduced to support next-generation energy infrastructure, offering improved efficiency, compact system design, and enhanced reliability for high-power applications such as renewable integration, AI data centres, and advanced grid networks.
Wolfspeed has introduced two new 3.3 kV silicon carbide (SiC) power module families designed to help energy infrastructure providers address rising power demands driven by AI data centers, renewable energy systems, and grid modernization initiatives. The launch includes the Wolfspeed WolfPACK full-bridge modules, available as models IBB020A33GM4 and IBB020A33GM4T, alongside the HAB900C33LM4 high-power half-bridge baseplate module. These devices are built on the company’s Gen 4 SiC technology platform and target medium-voltage power conversion applications.
The key features are:
- Optimized switching behavior for reduced high-frequency switching energy loss
- High thermal conductivity packaging enabling improved heat dissipation
- Enhanced insulation system supporting stable operation at elevated voltages
- Compact module architecture enabling higher power density per footprint
- Designed for improved surge current handling in dynamic load conditions
The new modules enable engineers to simplify medium-voltage converter designs by adopting two-level topologies for DC-link architectures above 2 kV. Wolfspeed’s HAB900C33LM4 is optimised for high-current applications exceeding 800 A and is aimed at solar inverters, grid-scale battery energy storage systems, and wind power converters. Meanwhile, the WolfPACK-based IBB020A33GM4 and IBB020A33GM4T modules provide a scalable, baseplate-less architecture suitable for solid-state transformers (SSTs), modular renewable energy systems, and advanced power distribution equipment.
A key feature of both product families is the use of advanced packaging technologies, including sintered die-attach materials that improve power-cycling capability and long-term reliability during continuous 24/7 operation. The modules also incorporate enhanced cosmic-ray robustness and improved thermal performance, making them suitable for demanding medium-voltage environments. According to Wolfspeed, the WolfPACK modules can help reduce solid-state transformer footprints by more than 50% compared with conventional transformer systems.
The HAB900C33LM4 module delivers up to 42% lower switching losses than competing SiC solutions and more than 90% lower switching losses than traditional IGBT-based designs under comparable operating conditions. Improved switching performance across temperature ranges also enables designers to reduce the size of magnetic components and EMI filters, thereby increasing power density and reducing system costs.
The new 3.3 kV SiC modules are intended for applications including AI data centre power delivery, solid-state transformers, renewable energy infrastructure, grid-scale energy storage, industrial power conversion, and next-generation medium-voltage distribution systems, where efficiency, scalability, and reliability are critical design requirements.
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