Product Overview: VIPER25HD - High-Density Offline Switcher

The VIPER25HD from STMicroelectronics is an advanced high-density power converter solution designed for switched-mode power supplies (SMPS). As a member of the VIPerPlus family, it integrates a robust high-voltage power MOSFET with a wide range of state-of-the-art features. This combination enables the design of compact and reliable power supplies suitable for a broad spectrum of applications.

Key Features

• High-Voltage Capability: The VIPER25HD operates on a wide input voltage range, accommodating various mains voltages and providing excellent flexibility for global applications.
• Energy Efficiency: With its advanced PWM controller and MOSFET technology, the VIPER25HD achieves high efficiency, which translates to energy savings and reduced heat dissipation.
• Compact Design: The integration of multiple functions within a single chip allows for a reduction in PCB size, making it ideal for space-constrained applications.
• Enhanced Protection Features: It includes multiple protection features such as overvoltage, overload, short-circuit, and thermal shutdown, ensuring safe operation under abnormal conditions.
• Low Standby Power Consumption: The device is designed to meet the stringent standby power requirements of energy-saving regulations, making it suitable for eco-friendly designs.

Applications

The VIPER25HD's versatile characteristics make it an excellent choice for a variety of applications, including:

• Power adapters and chargers
• STB (Set-Top Box) power supplies
• Auxiliary power supplies for appliances
• LED lighting drivers
• Smart metering systems

Technical Specifications

The device features a fixed 60 kHz switching frequency with frequency jittering for lower EMI, and it supports both isolated and non-isolated topologies. It is capable of delivering up to 18 W in wide range mains input and up to 30 W with European mains input, making it a versatile solution for power conversion.

Conclusion

With its high integration level, efficiency, and robustness, the VIPER25HD by STMicroelectronics represents a reliable and compact solution for designers looking to create high-performance power supplies with minimal external components.