Infineon SPW16N50C3: 500V CoolMOS Power Transistor for High-Efficiency Switching Applications

The relentless pursuit of higher efficiency and power density in modern electronics places immense demands on power conversion systems. At the heart of these systems, the power switching device is critical. The Infineon SPW16N50C3, a 500V N-channel CoolMOS power transistor, stands out as a premier solution engineered to meet these challenges in demanding switching applications.

This transistor is built upon Infineon's advanced CoolMOS C3 superjunction technology. This proprietary technology represents a significant leap over traditional MOSFETs, drastically reducing the key figure of merit, on-state resistance (RDS(on)), for a given die size. The SPW16N50C3 boasts an exceptionally low typical RDS(on) of just 0.19 Ω, which directly translates to minimized conduction losses. When the device is in its on-state, less power is wasted as heat, leading to cooler operation and higher overall system efficiency.

Beyond conduction losses, switching performance is paramount. The SPW16N50C3 is characterized by its fast switching speeds and low gate charge (Qg). These attributes are crucial for high-frequency operation, enabling designers to shrink the size of magnetic components like inductors and transformers. This capability is essential for developing more compact and lightweight power supplies without sacrificing performance. Furthermore, the low gate charge simplifies drive circuit requirements, reducing stress on the controller IC and further enhancing efficiency.

The device's 500V drain-source voltage rating provides a robust safety margin in standard universal mains applications (85 VAC – 305 VAC), making it an ideal choice for switched-mode power supplies (SMPS), power factor correction (PFC) stages, and lighting ballasts. Its high voltage capability ensures reliable operation against line transients and surges.

Additional features underscore its design for robustness and ease of use. The integrated fast recovery body diode improves reliability in hard-switching inductive circuits by minimizing reverse recovery losses and associated stress. The product is also halogen-free and RoHS compliant, aligning with modern environmental regulations.

In summary, the Infineon SPW16N50C3 leverages cutting-edge superjunction technology to deliver a powerful combination of low losses, high switching speed, and reliability, making it a top-tier choice for designers aiming to push the boundaries of efficiency and power density.

ICGOOODFIND: The Infineon SPW16N50C3 is a high-performance 500V CoolMOS transistor that sets a high standard for efficiency in power conversion. Its exceptional blend of ultra-low on-state resistance, fast switching capability, and integrated diode robustness makes it an outstanding component for optimizing modern, high-efficiency switching power supplies and other demanding applications.

Keywords: CoolMOS Technology, High-Efficiency, Low RDS(on), Fast Switching, Power Transistor.