STMicroelectronics

VIPER100

VIPER100 Description

The VIPER100 from STMicroelectronics is a high-performance offline converter IC designed for flyback topology applications, delivering up to 100W of power. This obsolete but robust component integrates an internal 620V breakdown voltage switch, enabling efficient power conversion with switching frequencies up to 200kHz. Operating within a 8V to 15V supply range, it features a low 11V startup voltage, making it suitable for energy-sensitive designs. The VIPER100 offers isolated output and complies with ROHS3 and REACH environmental standards, ensuring reliability in industrial and consumer applications. Packaged in a 5-pentawatt tube, it is rated for MSL 1 (Unlimited) moisture sensitivity, ideal for surface-mount assembly.

VIPER100 Features

• Integrated High-Voltage Switch: 620V breakdown for robust offline operation.
• Wide Frequency Range: Up to 200kHz for flexible design optimization.
• Advanced Control Features: Includes enable (EN) pin, frequency control, and soft-start for smooth power-up.
• Comprehensive Protection: Current limiting and over-temperature fault protection enhance system reliability.
• Low Startup Voltage: 11V ensures quick initialization in low-power conditions.
• Isolated Output: Supports safety-critical applications.

VIPER100 Applications

The VIPER100 excels in AC/DC power supplies for:

• Industrial Systems: Motor drives, PLCs, and automation equipment requiring stable isolated power.
• Consumer Electronics: Adapters, LED drivers, and home appliances.
• Telecom/Networking: Power modules for routers and base stations.
• Lighting Solutions: High-efficiency LED power supplies with precise control.

Conclusion of VIPER100

Though marked obsolete, the VIPER100 remains a versatile choice for designers needing a high-power, integrated offline switcher with advanced protections and control. Its flyback topology, wide voltage range, and compact form factor make it ideal for cost-sensitive yet demanding applications. For legacy systems or specific high-reliability needs, the VIPER100 offers a proven balance of performance and durability.

(Note: Replacement with newer alternatives is recommended for future-proof designs.)