VIPER17HD

Overview

The VIPER17HD is a high-voltage converter integrating an 800 V avalanche-rugged power MOSFET with PWM current mode control. It supports flyback, buck, and buck-boost topologies. Key parameters include a switching frequency of 60 kHz ± 7%, a supply voltage range of 4.5 V to 30 V, and low consumption (<10 mW at 230 V AC no-load). Protections include OCP, OVP, thermal shutdown, and pulse-skip.

Feature Summary

• Integrates an 800 V avalanche-rugged power MOSFET for extended input voltage coverage.
• Features embedded HV startup and sense-FET for minimal external component count.
• Includes jittered switching frequency to reduce EMI filter costs.
• Offers comprehensive protection with automatic restart capabilities.

Applications

• Flyback converter designs
• Buck converter designs
• Buck-boost converter designs

Procurement Notes

Verify the specific suffix (e.g., TR) against the manufacturer's official datasheet to confirm packaging type and reel specifications. Ensure the device version matches the required regulatory compliance standards for your target market. Cross-reference the ordering code with authorized distributors to confirm availability and authenticity before finalizing procurement plans.

Selection Notes

Select this component for applications requiring high input voltage ranges and compact design due to integrated startup circuits. Consider the 60 kHz switching frequency for balancing efficiency and EMI performance. Evaluate the need for avalanche ruggedness if the application involves high inductive loads or voltage spikes that exceed standard breakdown limits.

Part Context

This part belongs to the VIPer family of high-voltage switchers from STMicroelectronics. These devices are designed to simplify power supply design by integrating the controller and power switch into a single package. The family targets energy-efficient solutions meeting stringent standby power requirements.

Replacement Considerations

Check for pin-compatible alternatives within the same VIPer series, such as VIPER17A or VIPER17E, which may offer similar electrical characteristics but different packaging or temperature ratings. Verify functional equivalence regarding switching frequency and protection thresholds before substitution.