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VIPER27HDTR

VIPER27HDTR

STMicroelectronics
Converter Offline Flyback Topology 115kHz 16-SO
Active14,698 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The VIPER27HDTR is a high-performance offline converter tailored for flyback topologies, integrating an 800V avalanche-rugged power MOSFET with a PWM controller. Operating at a fixed frequency of 115kHz with built-in jittering, it simplifies EMI filter design while providing up to 20W of output power.

Why Choose This Part

It offers extremely low standby consumption of less than 50mW at 265Vac, meeting strict energy efficiency standards. Integrated safety features like adjustable overvoltage protection and hysteretic thermal shutdown reduce external component count and improve system reliability.

Applications

Auxiliary Power Supplies
Ideal for providing stable low-voltage rails in industrial systems and large appliances.
Adapters and Chargers
Efficiently converts AC mains to DC for consumer electronics with low standby power requirements.
LED Lighting Drivers
Acts as the primary side controller in isolated constant-current or constant-voltage LED power stages.
Smart Metering
The 800V breakdown voltage provides a robust safety margin against mains surges in utility metering applications.

Key Specifications

Topology Flyback
Duty Cycle 80%
Mounting Type Surface Mount
Power (Watts) 20 W
Package / Case 16-SOIC (0.154", 3.90mm Width)
Fault Protection Current Limiting, Over Temperature, Over Voltage
Output Isolation Isolated
Internal Switch(s) Yes
Voltage - Start Up 14 V
Voltage - Breakdown 800V
Frequency - Switching 115kHz
Operating Temperature -40degC ~ 150degC (TJ)
Supplier Device Package 16-SO
Voltage - Supply (Vcc/Vdd) 8.5V ~ 23.5V

Getting Started

Designers can utilize the STMicroelectronics eDesignSuite software to calculate transformer parameters and compensation networks. For physical prototyping, ensure the SO16 package thermal pad is properly soldered to a copper area for heat dissipation.

VIPER27 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Sw. Freq Stock
VIPER27HDTR (this part) Tape & Reel 115k 14,698
VIPER27LDTR Tape & Reel 60k 146

Also Consider

UCC28740DR TITexas Instruments - Provides constant-voltage and constant-current regulation using primary-side sensing to eliminate optocouplers.