VIPER50A-E

Overview

The VIPER50A-E is a fixed frequency offline converter utilizing VIPower M0 Technology. It integrates a PWM circuit with a high-voltage Vertical Power MOSFET rated at 700V and 1.5A on a single silicon chip. The device supports offline power supplies with secondary power capabilities of 25W in wide-range conditions or 50W in single-range configurations. Key electrical parameters include an adjustable switching frequency up to 200kHz, an internal trimmed Zener reference, and an integrated start-up supply.

Feature Summary

• Integrates state-of-the-art PWM circuitry with a high-voltage Vertical Power MOSFET on one silicon chip
• Features automatic burst mode operation for efficient standby performance without additional components
• Includes comprehensive protection mechanisms such as over-temperature shutdown and under-voltage lockout with hysteresis
• Offers current mode control with adjustable current limitation and soft-start functionality

Applications

• Offline power supplies requiring 25W capability in wide input voltage ranges
• Offline power supplies requiring 50W capability in single range or doubler configurations
• Standby mode applications compliant with Blue Angel norms for low total power consumption

Procurement Notes

Verify component status carefully as the VIPER50A-E is listed as obsolete. Confirm availability through authorized distributors or surplus channels if sourcing for existing designs. Ensure design compatibility with legacy systems since new design recommendations may not apply. Check specific datasheet revisions for any manufacturing changes prior to integration.

Selection Notes

Select this component for designs requiring a compact solution combining control and power stages. It reduces component count by approximately 50% compared to discrete solutions. Suitable for applications needing primary or secondary regulation loops. Consider the 700V breakdown voltage and 1.5A current rating when sizing transformer and output stages for the target power level.

Part Context

Part of the VIPer50 family using VIPower M0 Technology. Related variants include VIPER50A, VIPER50ASP, and VIPER53-E. These devices share similar integration concepts but vary in switching frequency characteristics and specific power handling capabilities within the offline converter category.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the part is obsolete, engineers should consult official STMicroelectronics replacement guides or contact technical support for qualified alternatives.