- ROHM’s new SiC semiconductor cuts on-resistance by 30% at high temperatures.
- The technology targets EV powertrains and AI server power supply systems.
ROHM has introduced its fifth-generation silicon carbide (SiC) power semiconductor, marking a significant advancement in high-temperature performance for next-generation power electronics. Announced on April 21, the new device achieves a 30% reduction in on-resistance at elevated temperatures compared to previous models. This improvement directly enhances energy efficiency and thermal stability, which are critical factors in demanding applications such as electric vehicle powertrains and artificial intelligence server infrastructure.
Enhanced Performance for High-Temperature Applications
The newly developed SiC power semiconductor focuses on maintaining lower on-resistance even under high thermal conditions. This is a key challenge in power electronics, where increased temperatures typically degrade performance. By achieving a 30% reduction compared to conventional solutions, the technology enables more efficient energy conversion and reduces heat generation. This advancement supports improved system reliability and allows for more compact and lightweight designs in both automotive and industrial applications.
Application in Electric Powertrains and AI Systems
The semiconductor is specifically designed for integration into electric vehicle powertrain systems, where efficiency and thermal management are crucial for extending driving range and optimizing performance. Additionally, the component is suitable for artificial intelligence server power supplies, which require stable and efficient power delivery under continuous high-load conditions. By addressing both sectors, the innovation aligns with growing global demand for electrification and high-performance computing infrastructure.
Development Timeline and Availability
ROHM confirmed that bare chip samples of the fifth-generation SiC power semiconductor will be made available in 2025. This timeline allows industry partners to begin evaluation and integration into future system designs. The development reflects ongoing advancements in SiC technology, which is increasingly preferred over traditional silicon due to its superior efficiency, higher breakdown voltage, and improved thermal conductivity.
Key Performance Comparison of ROHM SiC Semiconductor
| Parameter | Improvement |
|---|---|
| On-resistance at high temperature | 30% reduction |
| Application focus | EV powertrain, AI servers |
| Sample availability | 2025 |
Advancing SiC Technology Adoption
The introduction of this fifth-generation device reinforces the growing role of SiC semiconductors in modern power systems. With increasing electrification across industries, components that deliver higher efficiency under extreme conditions are becoming essential. Japan-based ROHM continues to expand its portfolio to meet these evolving requirements, contributing to the broader transition toward energy-efficient and high-performance electronic systems.
Frequently Asked Questions
What makes ROHM’s fifth-generation SiC power semiconductor significant?
The fifth-generation SiC power semiconductor developed by ROHM is significant because it reduces on-resistance by 30% at high temperatures, improving efficiency and thermal stability. This advancement enables better performance in electric vehicle powertrains and AI server power supplies. The reduced energy loss leads to enhanced system reliability and supports compact design architectures. With sampling planned for 2025, the innovation is expected to accelerate adoption of silicon carbide technology in high-demand power electronics applications.
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