STMicroelectronics VIPER38LD - High Voltage Converter

The VIPER38LD from STMicroelectronics is a cutting-edge, high-voltage converter that combines a dedicated current mode PWM controller with a high-voltage power MOSFET on the same silicon chip. Featuring a wide input voltage range and integrated protections, this device is designed to offer a compact and efficient solution for power supply applications.

Key Features

• Integrated 800V avalanche-rugged MOSFET – Allowing for reduced component count and enhanced reliability, the VIPER38LD is capable of withstanding high energy spikes in the application environment.
• Adjustable switching frequency up to 132 kHz – Provides flexibility to optimize for efficiency or component size depending on the application requirements.
• Current Mode Control – Offers excellent input voltage feedforward compensation and inherent pulse-by-pulse current limiting enhancing the overall system robustness.
• Multiple Protections – Includes overload protection, overvoltage protection, hysteresis thermal shutdown, and soft-start to ensure safe operation under a variety of fault conditions.
• Low Standby Power – The device is designed for energy-saving across a wide range of conditions, making it suitable for applications that require compliance with energy-saving regulations.

Applications

The VIPER38LD is ideal for switched-mode power supplies (SMPS) and is particularly suited for applications such as:

• LED lighting drivers
• Adapters and chargers for smartphones, tablets, and other portable devices
• Auxiliary power supplies for home appliances, industrial systems, and air-conditioners
• Standby and auxiliary power supplies

Design Support

STMicroelectronics supports designers with a suite of simulation tools and design resources to reduce development time and get products to market faster. The VIPER38LD is supported by application notes and reference designs that can be used as a starting point for new power supply designs.

Overall, the VIPER38LD is a robust and flexible solution for developing compact, efficient, and reliable power supplies in a variety of applications. Its advanced features and integrated design help engineers to meet stringent energy efficiency standards while minimizing the size of the power supply.