STMicroelectronics VIPER20A-E: High-Voltage Converter

The VIPER20A-E is a versatile and robust integrated circuit produced by STMicroelectronics, designed for high-voltage power conversion applications. This device is part of the VIPER Plus family, which is renowned for its ability to combine a dedicated current mode PWM controller with a high-voltage power MOSFET on the same silicon chip.

Featuring a wide input voltage range, the VIPER20A-E is capable of handling voltages up to 265 VAC or 400 VDC, making it exceptionally suitable for a variety of offline power supply designs. It is engineered to deliver a power output of up to 20 watts, which, combined with its compact size, makes it an excellent choice for space-constrained applications.

The VIPER20A-E incorporates several protective features to ensure the reliability and longevity of your power supply design. These include overvoltage protection, thermal shutdown, and overcurrent protection. The built-in soft-start function also contributes to the safety of the device by reducing stress on components during power-up.

With its integrated oscillator, the VIPER20A-E ensures a fixed frequency operation at 60 kHz, which can be externally adjusted up to 200 kHz. This flexibility allows designers to optimize the converter for efficiency or for reduced electromagnetic interference (EMI), depending on the application requirements.

STMicroelectronics has designed the VIPER20A-E to be user-friendly, with minimal external components required for operation. This simplifies the design process and helps reduce the overall bill of materials. Applications for the VIPER20A-E are diverse and include switch-mode power supplies (SMPS), power adapters, and various converters for consumer electronics, such as TVs, VCRs, and computer peripherals.

The VIPER20A-E is available in a Pentawatt HV package, which is designed to provide excellent thermal performance and ease of mounting on printed circuit boards. For designers looking to create efficient, reliable, and cost-effective power solutions, the VIPER20A-E from STMicroelectronics stands out as a powerful and versatile component.