IN Brief:
- Navitas will license its fourth- and fifth-generation GeneSiC technology to Magnachip.
- The manufacturing programme covers silicon carbide devices rated at 1,200V, 2,300V, 3,300V, and above.
- Magnachip will transfer, qualify, and produce the processes at its South Korean fabrication facility.
Navitas Semiconductor and Magnachip Semiconductor have formed a technology and manufacturing partnership covering silicon carbide power devices rated at 1,200V, 2,300V, 3,300V, and above. Magnachip will license the fourth- and fifth-generation GeneSiC processes, then qualify them for production at its wafer fabrication facility in South Korea.
Alongside the device technology, Navitas will provide access to the materials, substrate, and supply relationships assembled around its GeneSiC portfolio. The agreement creates an additional manufacturing route for components intended for grid infrastructure, energy storage, railway traction, industrial drives, automotive power systems, and other high-energy conversion equipment.
Silicon carbide is already well established in 400V and 800V electric-vehicle architectures, solar inverters, fast chargers, and compact industrial converters, where its higher critical electric field and faster switching can reduce conduction losses, switching losses, and passive-component size. Moving towards 2,300V and 3,300V extends those characteristics into equipment that has traditionally depended on silicon IGBTs, series-connected switches, or more complex multilevel arrangements.
Higher blocking voltage can reduce the number of devices required in a current path, although the surrounding converter does not become simpler automatically. Gate-drive isolation, parasitic inductance, voltage sharing, partial discharge, creepage, clearance, cooling, and fault-energy management all grow more demanding as the DC link rises and the switched energy increases.
The trench-assisted planar structure used by GeneSiC retains a planar gate while introducing trench features to control electric field and resistance. That approach offers a route towards lower specific on-resistance without adopting a fully trench-gate device, but commercial performance still rests on oxide stability, crystal-defect control, wafer uniformity, and repeatable processing across production lots.
Before volume supply begins, qualification will occupy much of the programme and establish the evidence required by converter manufacturers. The JEDEC guidelines for SiC power-device reliability have sharpened attention around threshold-voltage stability, gate-oxide stress, body-diode behaviour, short-circuit endurance, and the relationship between accelerated tests and service conditions.
Grid, transport, and industrial assets bring longer service expectations than most consumer electronics, often combining decades of planned operation with repeated electrical and thermal cycling. A change of power transistor can alter gate resistance, desaturation thresholds, snubber networks, electromagnetic emissions, heat-sink loading, and protection timing, so customers will require stable electrical distributions as well as favourable headline ratings.
Magnachip contributes an established process-control and manufacturing base, while Navitas brings a device platform and access to the upstream ecosystem required to support it. Process transfer remains a substantial exercise: recipes, masks, metrology, inspection, yield learning, reliability data, and failure-analysis methods all have to reproduce the original technology closely enough for customer qualification.
Packaging presents a parallel constraint, particularly above 1,700V, where internal spacing, substrate selection, encapsulation, terminal geometry, and thermal cycling can become limiting factors before the die reaches its theoretical capability. Modules must also manage common-source inductance and switching overshoot without sacrificing insulation life or serviceability.
Converter developers will be watching dynamic behaviour as closely as static blocking voltage. Faster edges can improve efficiency, yet they raise common-mode currents and place greater stress on insulation, bearings, sensors, and adjacent control electronics; deliberately slowing a device may restore electromagnetic compatibility while surrendering part of the efficiency gained by moving to SiC.
European semiconductor investment is expanding around the same market, including Infineon’s €5 billion Dresden power-semiconductor fabrication plant. Wafer capacity alone cannot secure supply, however, because SiC availability also depends on substrates, epitaxy, specialist process equipment, packaging, modules, and lengthy application qualification.
The partnership broadens Navitas’ manufacturing options while giving Magnachip an entry into voltage classes aligned with transmission equipment and heavy electrification. Once the transferred processes reach stable yield, the more exacting test will come from converter manufacturers seeking predictable switching behaviour, documented ruggedness, and supply commitments long enough to match the assets built around the devices.
