VIPER25HDTR

Overview

The VIPER25HDTR is an off-line high voltage converter from the VIPerPlus family, integrating a rugged 800 V power MOSFET with PWM current mode control. It operates in quasi-resonant mode to reduce EMI filter costs and standby consumption below 50 mW at 265 Vac. The device features dual-level overcurrent protection, adjustable overvoltage protection, hysteretic thermal shutdown, and safe auto-restart. It supports a flyback topology with a switching frequency of 225 kHz, delivering up to 20 W output power. Operating temperatures range from -40°C to +150°C TJ.

Feature Summary

• Integrates an 800 V rugged power section with PWM current mode control for high-voltage offline conversion.
• Features quasi-resonant operation to minimize electromagnetic interference and reduce component costs.
• Includes comprehensive protection mechanisms such as dual-level overcurrent, overvoltage, and hysteretic thermal shutdown.
• Supports burst mode operation to achieve ultra-low standby power consumption under no-load conditions.

Applications

• General-purpose isolated flyback converters
• Adapters and chargers for consumer electronics
• Industrial applications requiring low standby power

Procurement Notes

Verify the specific suffix HDTR indicates the SOIC-16 surface mount package configuration. Confirm that the part status is active and not obsolete, as related DIP variants may have different lifecycle statuses. Ensure compatibility with moisture sensitivity levels for SMD/SMT installation processes.

Selection Notes

Select this component for designs requiring high input voltage tolerance and integrated power switching. The fixed 225 kHz frequency suits applications where EMI compliance is critical without complex filtering. Consider the 16-SOIC package constraints for thermal management and PCB layout density compared to through-hole alternatives.

Part Context

This part belongs to the VIPer25 series within the VIPerPlus family of AC/DC converters. It is designed as a monolithic solution for offline switch-mode power supplies, combining control logic and power MOSFETs into a single chip to simplify design and reduce bill of materials.

Replacement Considerations

VIPER25HD is the non-tape-and-reel tube packaging equivalent. Verify pinout and electrical specifications match before substitution.