STMicroelectronics

VIPER22AS-E

VIPER22AS-E Description

The VIPER22AS-E from STMicroelectronics is a high-performance offline switcher IC designed for flyback topologies, integrating an internal 730V avalanche-rugged power MOSFET and PWM controller. This surface-mount 8SOIC device operates with a wide input voltage range (8V–38V) and delivers up to 7W of output power at a fixed 60kHz switching frequency. It features isolated output and complies with ROHS3 and REACH environmental standards, making it suitable for modern, eco-conscious designs. With low standby power consumption and a 14.5V startup voltage, it excels in energy-efficient applications.

VIPER22AS-E Features

• Integrated High-Voltage MOSFET: 730V breakdown voltage ensures robustness in harsh conditions.
• Comprehensive Protection: Includes current limiting, over-temperature, and over-voltage fault protection for enhanced reliability.
• Wide Input Range: Operates from 8V to 38V, accommodating fluctuating power sources.
• Low Standby Power: Optimized for energy-saving designs, meeting global efficiency standards.
• Fixed 60kHz Frequency: Reduces EMI filter complexity while maintaining stable performance.
• Compact 8SOIC Package: Space-saving SMT design ideal for constrained PCB layouts.

VIPER22AS-E Applications

The VIPER22AS-E is ideal for low-power AC/DC converters in:

• Consumer Electronics: Power adapters for smartphones, IoT devices, and set-top boxes.
• Industrial Systems: Auxiliary power supplies for PLCs, sensors, and control modules.
• Lighting: LED drivers requiring isolated, efficient power conversion.
• Home Appliances: Standby power circuits in smart meters and white goods.
  Its isolated topology and protection features make it particularly suited for safety-critical applications requiring compliance with international standards.

Conclusion of VIPER22AS-E

The VIPER22AS-E stands out as a compact, reliable, and efficient offline switcher IC, combining high integration with robust protection mechanisms. Its wide input range, low standby power, and 7W output capability make it a versatile choice for cost-sensitive yet high-performance designs. Whether for consumer, industrial, or lighting applications, this device delivers superior performance while meeting stringent environmental and safety requirements. Engineers can leverage its flyback topology to simplify designs and reduce BOM costs without compromising reliability.