STMicroelectronics

VIPER26HD

VIPER26HD Description

The VIPER26HD from STMicroelectronics is a high-performance offline switcher IC designed for flyback topology applications, delivering up to 20W of power. This surface-mount device operates within a 11.5V to 23.5V supply range, featuring an integrated 800V breakdown voltage MOSFET for robust performance in demanding environments. With a 115kHz switching frequency, it ensures efficient power conversion while maintaining a 70% duty cycle. The VIPER26HD is part of the VIPer™ plus series, combining reliability with advanced protection mechanisms like current limiting and over-temperature fault protection. Its 13V startup voltage and either output isolation capability make it versatile for diverse designs.

VIPER26HD Features

• Integrated 800V MOSFET: Reduces external component count and enhances reliability.
• Wide Vcc Range (11.5V–23.5V): Supports flexible power supply designs.
• High Switching Frequency (115kHz): Enables compact magnetics and improved efficiency.
• Comprehensive Protections: Includes current limiting and over-temperature shutdown for robust operation.
• ROHS3 & REACH Compliant: Meets stringent environmental and safety standards.
• 3 (168 Hours) MSL Rating: Suitable for extended storage in humid environments.
• Either Output Isolation: Adaptable for isolated or non-isolated configurations.

VIPER26HD Applications

The VIPER26HD excels in low-to-medium power AC/DC conversion systems, including:

• Power Adapters: For consumer electronics (e.g., routers, set-top boxes).
• Auxiliary Power Supplies: In industrial controls and appliances.
• LED Drivers: Providing stable power for lighting systems.
• Home Automation: Smart plugs and IoT devices requiring compact, efficient power solutions.

Conclusion of VIPER26HD

The VIPER26HD stands out for its integration, efficiency, and protection features, making it ideal for cost-sensitive yet high-reliability applications. Its flyback topology and wide input range cater to diverse offline power needs, while compliance with ROHS3 and REACH ensures environmental safety. Engineers will appreciate its reduced BOM complexity and robust performance in challenging conditions, solidifying its position as a top choice for 20W offline power conversion.