The new 4.5 kV/1200 A modules are designed to increase both the efficiency and reliability of inverters used in large industrial equipment and railway systems operating in a wide range of environments, including outdoor settings. They incorporate proprietary RFC (Relaxed Field Cathode) diode and CSTBT (Carrier-Stored Trench-Gate Bipolar Transistor) structures, which significantly improve various performance metrics compared to previous products.
Key Technical Innovations
: Increased Humidity Resistance: The new modules offer approximately 20 times greater humidity resistance compared to previous models, improving durability in harsh environments.
Reduced Switching Losses: The optimized design reduces total switching losses by around 5% compared to previous generations, contributing to greater energy efficiency.
Improved RRSOA Tolerance: The reverse safe operating area (RRSOA) tolerance is approximately 2.5 times higher than previous models, improving device robustness under demanding operating conditions.
Reduced Termination Size: The implementation of advanced electric field relaxation structures has enabled a reduction in the chip termination region volume of around 30%, resulting in a more compact design without sacrificing performance.
These advancements allow the new XB Series HVIGBT modules to deliver both efficiency and reliability improvements for large-scale power inverters, contributing to Mitsubishi Electric's goal of achieving carbon neutrality through more efficient energy conversion solutions.
