VIPER20A-22-E

Overview

The VIPER20A-22-E is an offline switcher IC from STMicroelectronics designed for high-voltage power supply applications. It integrates a 700V MOSFET with a current-mode PWM controller, enabling compact designs for flyback converters. The device operates with a switching frequency up to 200kHz and supports output powers of 10W in wide-range conditions or 20W in single-range configurations. It features built-in protection mechanisms including cycle-by-cycle current limiting and thermal shutdown to ensure reliable operation under fault conditions.

Feature Summary

• Integrates a high-voltage 700V MOSFET with a current-mode PWM controller for simplified design
• Includes comprehensive protection features such as cycle-by-cycle current limiting and thermal shutdown
• Supports flexible topology implementation for offline flyback power supplies

Applications

• Offline power supplies requiring secondary power capability of 10W in wide range condition
• Single range offline power supplies with secondary power capability up to 20W
• General purpose switched-mode power supplies utilizing flyback topology

Procurement Notes

Verify the specific suffix and package type against the official datasheet to ensure compatibility with your design requirements. Confirm that the component meets all necessary regulatory standards for your target market. Check for any obsolescence notices or lifecycle status updates directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when designing offline flyback converters requiring integrated high-voltage switching capabilities. It is suitable for applications needing efficient power conversion with minimal external components. Consider the thermal management requirements associated with the PowerSO-10 package and the specific voltage ratings required by the application circuit.

Part Context

This part belongs to the VIPER™ family of high-voltage offline converters from STMicroelectronics. These devices are engineered to reduce system cost and complexity by integrating the power switch and control logic into a single monolithic chip. The VIPER series is widely used in various consumer and industrial power supply designs due to its reliability and performance.

Replacement Considerations

Direct substitutes within the same family include the VIPER20ASPTR-E. Verify pinout compatibility and electrical specifications before substitution. Ensure that any replacement component meets the same voltage and current ratings required by the original design.