VIPER319HDTR

Overview

The VIPER319HDTR is an energy-saving off-line high voltage converter from STMicroelectronics, integrating an 800 V avalanche-rugged power MOSFET with PWM current-mode control. It supports flyback, buck, and buck-boost topologies. Key electrical parameters include a drain current limit of 990 mA, a wide supply voltage range of 4.5 V to 30 V, and jittered switching frequencies of 30 kHz (type X), 60 kHz (type L), or 132 kHz (type H). Input power consumption is less than 20 mW at 230 V AC in no-load conditions.

Feature Summary

• Integrates an 800 V avalanche-rugged power MOSFET for extended input voltage range coverage.
• Features embedded high-voltage startup and sense FETs to minimize external component count.
• Includes built-in soft-start and comprehensive protection mechanisms such as thermal shutdown and overvoltage.
• Utilizes frequency jittering to reduce electromagnetic interference filter costs.

Applications

• General purpose offline power supplies
• Flyback converter designs
• Buck and buck-boost topology applications

Procurement Notes

Verify the specific suffix type (X, L, or H) corresponding to the required switching frequency during procurement. Confirm package details match the SOIC-Narrow-16 specification. Ensure design compliance with European CoC standards if efficiency metrics are critical. Cross-reference datasheet revisions for any updates to protection thresholds or electrical characteristics before finalizing orders.

Selection Notes

Select this component for applications requiring high voltage tolerance and low standby power consumption. The integrated 800 V MOSFET allows for reduced snubber circuit size. Choose based on the required switching frequency variant (30 kHz, 60 kHz, or 132 kHz) to optimize EMI performance. Consider the 990 mA current limit when sizing output power requirements.

Part Context

This device belongs to the VIPERPlus family of high-voltage converters. It is designed to meet stringent energy-saving standards through pulse frequency modulation at light loads. The series offers a complete solution with minimal external components, supporting various non-isolated and isolated converter topologies for efficient power management.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs by comparing pinouts and electrical specifications against alternative VIPER series devices or other high-voltage converter ICs.