STMicroelectronics

VIPER12AS-E

VIPER12AS-E Description

The VIPER12AS-E from STMicroelectronics is a high-performance offline switching IC designed for AC/DC converter applications. Part of the VIPER™ series, this 8 W power IC integrates a 730V breakdown voltage MOSFET, making it highly efficient for low-power offline SMPS (Switched-Mode Power Supply) designs. Operating with a switching frequency of 60kHz, it supports a wide input voltage range (9V–38V) and features a low start-up voltage of 14.5V, ensuring reliable performance in diverse conditions. Packaged in an 8SOIC tube, it is RoHS3 compliant and rated for MSL 3 (168 hours) moisture sensitivity, meeting stringent environmental and reliability standards.

VIPER12AS-E Features

• Integrated High-Voltage MOSFET: 730V breakdown rating enhances durability in high-voltage environments.
• Wide Input Range (9V–38V): Supports flexible power supply designs, including universal mains applications.
• Built-In Protections: Features current limiting, over-temperature, and over-voltage protection for robust fault management.
• Low Start-Up Voltage (14.5V): Ensures quick and stable initialization, reducing external component count.
• Compact & Efficient: 60kHz switching frequency optimizes transformer size and power efficiency.
• REACH & RoHS3 Compliant: Environmentally friendly and suitable for global markets.

VIPER12AS-E Applications

Ideal for low-power offline power supplies, the VIPER12AS-E excels in:

• Auxiliary power supplies for industrial and consumer electronics.
• LED drivers requiring compact, high-efficiency solutions.
• Home appliances (e.g., smart meters, white goods) due to its reliability and protections.
• Battery chargers and adapters where space and cost efficiency are critical.

Conclusion of VIPER12AS-E

The VIPER12AS-E stands out as a cost-effective, highly integrated offline switcher, combining high voltage tolerance, robust protections, and compact design. Its wide input range and low start-up voltage make it versatile for diverse low-power AC/DC applications, while compliance with RoHS3 and REACH ensures global usability. Engineers seeking a reliable, space-saving solution for auxiliary power or LED driving will find this IC an optimal choice.