VIPER37HDTR

Overview

The VIPER37HDTR is an offline converter from the VIPerPlus family, designed for high-performance flyback applications. It integrates a rugged 800 V power MOSFET and PWM control circuitry. Key electrical parameters include a switching frequency of 115 kHz, a maximum duty cycle of 80%, and a supply voltage range of 8.5 V to 23.5 V. The device supports up to 18 W output power with a typical standby consumption of 3.5 mA. It operates within a temperature range of -40°C to +150°C TJ and utilizes a 16-SOIC narrow package.

Feature Summary

• Integrates an 800 V avalanche-rugged power MOSFET for ultra-wide input voltage ranges.
• Features advanced frequency jittering to reduce EMI filter costs and improve EMC performance.
• Includes comprehensive protection mechanisms such as hysteretic thermal shutdown, soft-start, and safe auto-restart after fault conditions.

Applications

• High-performance offline AC/DC converters
• Flyback topology power supplies
• General-purpose switched-mode power supplies

Procurement Notes

Verify the specific suffix 'H' against official STMicroelectronics documentation to confirm the 115 kHz switching frequency variant. Ensure the 16-SOIC narrow package matches the target PCB footprint. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement.

Selection Notes

Select this component for designs requiring higher switching frequencies compared to standard variants. The integrated high-voltage startup circuit simplifies design. Consider the 18 W power capability and 115 kHz operation when sizing magnetic components. Verify compatibility with system brownout and overload protection requirements.

Part Context

This part belongs to the VIPerPlus series of integrated power switches. These devices combine high-voltage MOSFETs with intelligent control logic in a single package. The series targets cost-effective and compact power supply solutions for consumer and industrial electronics.

Replacement Considerations

Public confirmed substitute: VIPER27LD (Parameter equivalent). Verify pinout and electrical specifications before substitution.