Introduction
The choice of power semiconductor technology has a profound impact on the efficiency, density, and cost of data center power systems.
Material Properties Comparison
| Property | Silicon (Si) | Silicon Carbide (SiC) |
|---|---|---|
| Band Gap (eV) | 1.12 | 3.26 |
| Breakdown Field (MV/cm) | 0.3 | 2.8 |
System-Level Benefits
- Higher efficiency (98-99% vs 94-96%)
- 3-5x higher power density
- Better thermal management
- Higher voltage capability
Conclusion
For 800V HVDC data center applications, SiC is generally the superior choice for power conversion.