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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：80%
- Frequency - Switching：115kHz
- 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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Overview
The VIPER37HD is an offline AC/DC converter from the VIPerPlus family, designed for high-performance applications up to 18 W. It integrates an 800 V avalanche-rugged power MOSFET and a PWM controller with flyback topology. Key electrical parameters include a switching frequency of 115 kHz, maximum duty cycle of 80%, and quiescent current of 3.5 mA. The device operates within an input voltage range of 8.5 V to 23.5 V and supports output voltages up to 800 V. It functions reliably across a temperature range of -40 °C to +150 °C and is housed in a SOIC-Narrow-16 package.
Feature Summary
- Integrates an 800 V avalanche-rugged power MOSFET for ultra-wide range input voltage capability.
- Includes advanced protection features such as two-level overcurrent protection, output overvoltage protection, and hysteretic thermal shutdown.
- Features frequency jittering to reduce EMI filter costs and burst mode operation for low standby consumption.
- Provides safe auto-restart after fault removal and onboard soft-start functionality.
Applications
- Isolated auxiliary power supplies
- General-purpose offline converters
- High-voltage DC-DC conversion
Procurement Notes
Verify the specific suffix against official STMicroelectronics documentation to confirm pinout and feature variations. Ensure compatibility with SOIC-Narrow-16 footprint requirements. Confirm RoHS compliance status through the manufacturer's latest datasheet or certification documents before finalizing procurement specifications.
Selection Notes
Select this component for designs requiring high voltage isolation and rugged MOSFET performance. Consider the 115 kHz fixed frequency and 18 W power limit when sizing magnetic components. Evaluate the need for brownout protection and thermal management capabilities relative to the operating environment constraints.
Part Context
The VIPER37HD belongs to the VIPerPlus family of integrated power switches. This series combines high-voltage MOSFETs with intelligent control circuitry to simplify offline power supply design. It targets cost-sensitive applications requiring high reliability and efficiency without external discrete components.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult STMicroelectronics official resources for cross-reference information.
