STMicroelectronics VIPER25HDTR - High-Performance Off-Line Converter

The VIPER25HDTR from STMicroelectronics is an advanced off-line converter with an integrated 730V avalanche-rugged power section, providing a compact and robust solution for power supply applications. This high-density power converter is part of the VIPerPlus family, which is known for its energy efficiency and reliability. The VIPER25HDTR is designed to meet the stringent requirements of both industrial and consumer electronics.

Featuring a fixed 60 kHz switching frequency with frequency jittering for lower EMI, the VIPER25HDTR allows for the design of a cost-effective power supply with a very low number of external components. This device integrates a high-voltage startup circuit that ensures a very efficient startup phase, which is essential for reducing power consumption. The VIPER25HDTR also includes an error amplifier and an oscillator, further minimizing the need for additional components.

With its built-in protections such as overload protection, overvoltage protection, and thermal shutdown with hysteresis, the VIPER25HDTR ensures safe operation under abnormal operating conditions. The overvoltage protection is clamped by an internal Zener, ensuring the safe handling of overvoltage events. Additionally, its soft-start and safe auto-restart after a fault condition provide an additional layer of safety for the end application.

The VIPER25HDTR is designed for a wide range of applications, including switch-mode power supplies (SMPS), power adapters, and LED drivers. Its robustness and versatility make it an ideal choice for applications requiring a high level of integration and reliability such as home appliances, office equipment, and power tools.

To sum up, the VIPER25HDTR is a high-performance solution that combines energy efficiency, compactness, and safety features. Its integrated design and comprehensive set of protections make it a leading choice for designers looking to create advanced and reliable power systems.