VIPER25HD

$0.43

Description：IC OFFLINE SWITCH FLYBACK 16SO
Series：VIPer™ plus
Mfr：STMicroelectronics
Package：Tube

SKU:e2256e132ac7 Category: AC DC Converters, Offline Switchers Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC OFFLINE SWITCH FLYBACK 16SO
Series：VIPer™ plus
Mfr：STMicroelectronics
Package：Tube
Output Isolation：Isolated
Internal Switch(s)：Yes
Voltage - Breakdown：800V
Topology：Flyback
Voltage - Start Up：14 V
Voltage - Supply (Vcc/Vdd)：8.5V ~ 23.5V
Duty Cycle：-
Frequency - Switching：225kHz
Fault Protection：Current Limiting, Over Temperature, Over Voltage
Control Features：-
Operating Temperature：-40°C ~ 150°C (TJ)
Package / Case：16-SOIC (0.154", 3.90mm Width)
Supplier Device Package：16-SO
Mounting Type：Surface Mount
Grade：-
Qualification：-
Power (Watts)：20 W

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VIPER25HD

Overview

The VIPER25HD is an off-line converter from the VIPerPlus family, featuring a rugged 800 V power section and PWM control. It operates at a switching frequency of 225 kHz with a flyback topology. The device supports an input voltage range of 8.5 V to 23.5 V and delivers up to 20 W output power. It includes integrated soft-start, adjustable overcurrent protection, and hysteretic thermal shutdown. The component is available in a 16-SOIC package.

Feature Summary

Quasi-resonant control for valley switching operation to reduce EMI filter costs
Integrated high voltage start-up circuit eliminating external startup components
Safe auto-restart capability following fault condition removal
Burst mode operation enabling standby power consumption below 50 mW

Applications

Industrial applications requiring isolated AC/DC conversion
General purpose offline switch-mode power supplies
Adapters and chargers for consumer electronics

Procurement Notes

Verify the specific suffix (e.g., TR) against the required packaging format, as standard DIP variants exist within the same family. Confirm RoHS compliance status via the official datasheet before integration. Ensure the design accounts for the 16-SOIC thermal characteristics given the 150°C maximum junction temperature rating.

Selection Notes

Select this component for designs requiring an integrated high-voltage solution without external discrete switches. The quasi-resonant feature is suitable for cost-sensitive applications needing reduced electromagnetic interference. Consider the 800 V avalanche rating for robustness against line transients in industrial environments.

Part Context

The VIPER25HD belongs to the VIPerPlus family of high-voltage converters. It integrates a 700 V MOSFET with a current-mode controller into a single monolithic chip. This integration simplifies the design of medium-power offline power supplies by reducing component count and board space requirements compared to discrete solutions.