The VIPER20BSP is a high-performance, low-power integrated circuit designed by STMicroelectronics for use in switch-mode power supplies (SMPS) and power conversion applications. This versatile IC combines a dedicated current mode PWM controller with a high-voltage power MOSFET on the same silicon chip, offering a compact and efficient solution for AC/DC converters.

Featuring a wide supply voltage range, the VIPER20BSP is capable of handling input voltages from 9V to 38V, making it suitable for a variety of power applications. Its integrated 730V avalanche-rugged power MOSFET allows the device to withstand high voltage spikes, providing increased reliability and robustness in harsh electrical environments.

The VIPER20BSP's PWM controller includes an oscillator, error amplifier, current limit circuit, shutdown control, and soft-start functionality. The fixed 60 kHz switching frequency reduces the size of the external components, leading to a more compact power supply design. Additionally, the soft-start function minimizes the stress on the power components during startup, increasing the system's overall lifespan.

With its built-in thermal shutdown and overcurrent protection, the VIPER20BSP ensures safe operation under abnormal operating conditions. The device also offers low standby power consumption, making it an excellent choice for energy-saving applications that require compliance with power conservation standards.

The VIPER20BSP is available in a Pentawatt HV package, which is designed to offer good thermal performance and ease of assembly. This IC is ideal for a range of applications, including auxiliary power supplies for home appliances, PC peripherals, consumer electronics, and industrial systems.

In summary, the VIPER20BSP from STMicroelectronics is a highly integrated, efficient, and reliable solution for designers looking to create compact and robust power supplies with minimal external components and excellent power efficiency.