VIPER222LSTR

Overview

The VIPER222LSTR is a high-performance AC/DC converter from the VIPerPlus family, integrating a 730 V rugged power MOSFET with a PWM controller. It operates in Buck and Flyback topologies with a switching frequency of 60 kHz. The device supports an input voltage range of 4.5 V to 30 V and delivers up to 11 W output power. It features a maximum duty cycle of 80% and a quiescent current of 1.6 mA. Operating temperatures span from -40 °C to +150 °C. The component is housed in an SSOP-10 package.

Feature Summary

• Integrates a 730 V avalanche rugged power MOSFET with a PWM control circuit on a single silicon chip.
• Employs frequency jittering to spread electromagnetic interference (EMI) for compliance with standards.
• Utilizes burst mode technique to achieve very low input power consumption at light loads.
• Embeds high voltage startup and current sense circuits to minimize external bill of materials.

Applications

• Offline power supplies for battery charger adapters
• Standby power supplies for televisions or monitors
• Auxiliary supplies for motor control systems

Procurement Notes

Verify the specific suffix 'LSTR' against the manufacturer's official datasheet to confirm it denotes the SSOP-10 surface-mount package and reel packaging configuration. Ensure the part number matches the exact electrical specifications required for your design, as variations within the VIPer222 family may exist. Cross-reference the RoHS compliance status and moisture sensitivity level with the latest production documentation before finalizing procurement.

Selection Notes

Select this component when designing isolated flyback converters requiring high voltage integration and low standby power. The fixed 60 kHz switching frequency and integrated high-voltage startup simplify the design process by reducing external component count. Consider the thermal performance limits and the need for EMI filtering strategies that leverage the built-in frequency jittering feature for regulatory compliance.

Part Context

The VIPER222LSTR belongs to the VIPerPlus series of high-voltage converters from STMicroelectronics. This series combines a power MOSFET with a PWM controller to offer a compact solution for offline power applications. The device is designed to replace discrete solutions, offering improved reliability and reduced board space through high integration levels.

Replacement Considerations

Publicly confirmed substitute part numbers include VIPER222XSTR and VIPER222. Verify pinout compatibility and thermal characteristics when substituting between these variants.