VIPER20ASP-E

Overview

The VIPER20ASP-E is an integrated offline converter from the VIPerPlus family, manufactured by STMicroelectronics. It combines a high-voltage power MOSFET with a dedicated current mode PWM controller on a single silicon chip. The device utilizes a flyback topology and supports a maximum switching frequency of 200kHz. It features an internal switch rated for a breakdown voltage of 700V and operates within a supply voltage range of 8V to 15V. The component provides up to 20W of output power and includes built-in fault protection mechanisms such as current limiting and overtemperature shutdown. It is housed in a 10-PowerSO package with a exposed bottom pad.

Feature Summary

• Integrates a high-voltage power MOSFET and current mode PWM controller on a single chip
• Supports flyback topology with automatic burst mode operation under low load conditions
• Includes comprehensive protection against overcurrent, overtemperature, and overvoltage scenarios

Applications

• Battery charger adapters
• Standby power supplies for televisions or monitors
• Auxiliary supplies for motor control systems

Procurement Notes

Verify the specific suffix 'ASP' against the official datasheet to confirm package type and tape/reel configuration. Confirm RoHS3 compliance status and check for any recent product lifecycle changes, as availability may vary. Ensure the ordering part number matches the exact pinout and thermal requirements for the target PCB design.

Selection Notes

Select this component for applications requiring isolated AC-DC conversion with moderate power levels. The integrated design reduces external component count compared to discrete solutions. Consider the 700V drain-source voltage rating for primary side isolation requirements. Evaluate the thermal performance of the PowerSO-10 package for the expected operating environment.

Part Context

This part belongs to the VIPerPlus series of high voltage offline converters. It shares architectural similarities with other members like the VIPER22AS-E but differs in power handling capabilities and switching frequency specifications. The VIPER20ASP-E is designed for cost-effective, compact power supply designs where integration and reliability are prioritized.

Replacement Considerations

Public confirmed substitute part numbers: None identified.