VIPER318HDTR

Overview

The VIPER318HDTR is an energy-saving off-line high voltage converter from the VIPerPlus family, manufactured by STMicroelectronics. It integrates an 800 V avalanche-rugged power MOSFET with PWM current-mode control in a SOIC-16 package. Key electrical parameters include a drain current limit of 850 mA, a switching frequency of 132 kHz with jitter, and a supply voltage range of 4.5 V to 30 V. The device supports flyback, buck, and buck-boost topologies, featuring low no-load consumption (<20 mW at 230 V AC) and built-in protections such as thermal shutdown and overvoltage.

Feature Summary

• Integrates an 800 V avalanche-rugged power MOSFET for extended input voltage range coverage.
• Supports multiple topologies including flyback, buck, and buck-boost configurations.
• Features embedded high-voltage startup, sense FET, and error amplifier for minimal component count.
• Includes jittered switching frequency to reduce electromagnetic interference filter costs.

Applications

• General purpose isolated flyback converters operating from 90 to 265 V AC.
• Primary side regulation (PSR) power supplies requiring tight line and load regulation.
• Energy-efficient offline power adapters meeting stringent energy-saving standards.

Procurement Notes

Verify the specific suffix 'HDTR' corresponds to the required 132 kHz jittered frequency variant and SOIC-16 packaging configuration. Confirm RoHS compliance status and moisture sensitivity level requirements against your manufacturing process specifications. Ensure the ordering part number matches the exact pinout and thermal characteristics defined in the official datasheet before finalizing procurement.

Selection Notes

Select this component when designing systems requiring an integrated high-voltage solution with minimal external components. The 850 mA current limit suits moderate power applications, while the 132 kHz frequency offers a balance between efficiency and EMI performance. Consider the wide supply voltage range and integrated protections for robust designs in universal input environments.

Part Context

The VIPER318HDTR belongs to the VIPerPlus family of high-voltage converters. This series combines a power MOSFET with advanced control logic to simplify offline power supply design. The 'H' designation typically indicates the 132 kHz switching frequency variant within the VIPER31 lineup, distinguishing it from lower frequency options like the 30 kHz or 60 kHz versions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult the official STMicroelectronics replacement guide or contact technical support for validated cross-references based on specific application constraints.