VIPER50SP

Overview

The VIPER50SP is an offline converter from the VIPER series, utilizing a flyback topology with a maximum switching frequency of 200kHz. It features an internal switch with a breakdown voltage of 620V and operates within a supply voltage range of 8V to 15V, starting at 11V. The device provides up to 50W of power output and includes fault protection mechanisms such as current limiting and over-temperature shutdown. It is housed in a PowerSO-10 package with a bare bottom pad, also identified as 5-PENTAWATT, and supports surface mount installation.

Feature Summary

• Integrates a high-voltage vertical power MOSFET with optimized PWM circuitry on a single silicon chip.
• Provides comprehensive fault protection including current limiting and over-temperature shutdown.
• Supports burst mode operation for efficient standby performance without additional components.

Applications

• Offline power supplies requiring secondary power capability up to 50W
• Wide-range AC-DC conversion systems
• Single-range or doubler configuration power adapters

Procurement Notes

Verify component status carefully as this part is listed as obsolete. Confirm availability through authorized distributors or surplus channels. Ensure compatibility with existing PCB footprints for the PowerSO-10 package. Review datasheet specifications for electrical parameters before integration into new designs due to end-of-life status.

Selection Notes

Select this component for applications requiring integrated high-voltage switching and control in a compact form factor. Consider the 620V breakdown voltage for appropriate line voltage ranges. Evaluate thermal management requirements given the 50W power capability and Pentawatt package. Verify that the 200kHz maximum frequency aligns with system EMI and transformer design constraints.

Part Context

The VIPER50SP belongs to the VIPER family of offline converters developed by STMicroelectronics. These devices combine power switching and control logic to simplify power supply design. The specific model offers a balance of power density and protection features suitable for consumer and industrial adapter applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the product is marked obsolete, consult manufacturer resources for potential next-generation replacements within the VIPER series or similar isolated converter families.

FAQ

What is the maximum switching frequency of the VIPER50SP?

The maximum switching frequency is 200kHz.

Does the VIPER50SP include internal startup supply?

Yes, it features an internally trimmed Zener reference and integrated startup supply.