WeEn Launches WMSC Family of 1,200–2,300 V SiC Power Modules for Solid-State Transformers
The family includes more than 20 modules with on-resistance values as low as 1.5 mΩ.
WeEn Semiconductors has launched the WMSC family of AC-DC and DC-DC silicon carbide (SiC) power modules designed for solid-state transformers, EV chargers, smart grid and renewable energy applications.
What Happened
The new product line spans more than 20 modules with voltage ratings ranging from 1,200 to 2,300 V. On-resistance values go as low as 1.5 mΩ with the lowest spec part being the 1.5 mΩ, 1,200 V WMSC1R5H12B3S PCB-mount half-bridge for secondary-side use. For grid-side power factor correction in AI racks, WeEn says the modules handle conversion from 35 kV AC to 800 V DC in a single stage. Three-level topology parts like the 1,700 V, 5.0 mΩ WMSC5R0N17B3T are intended to improve EMI performance, while two-level devices such as the 2,300 V WMSC5R0F23B3T offer easier control and smaller footprints. On the DC-DC side, half-bridge modules for LLC and dual-active-bridge converters come in B2, B3 and 62 mm screw-mount housings.
Why It Matters
Solid-state transformers can achieve conversion efficiencies around 98%, according to WeEn. The company says the new modules cover roughly 90% of all SST applications and are also suited to smart grid, renewable and other high-voltage systems. Higher switching speeds and breakdown voltages allow for direct connection to medium-voltage grids while reducing magnetics and simplifying cooling — factors that could influence EV charging infrastructure design.
The Bottom Line
Kevin Shen, President of WeEn Semiconductors, said the modules offer higher efficiencies and are available for sampling and in production quantities. Custom configurations can be created through the company's design team.
