TOP221G

AC DC Converters, Offline Switchers Overview

The TOP221G is a three-terminal off-line PWM switch from the TOPSwitch-II family, integrating high-voltage power MOSFET and control circuitry into a single package. It supports flyback, forward, boost, and buck topologies with a switching frequency of 100 kHz. The device operates with an input voltage range of 85V to 265V AC and delivers up to 9W output power. Key electrical parameters include a 700V breakdown voltage, 67% maximum duty cycle, and 1.2mA supply current. It features built-in auto-restart and latching thermal shutdown for system protection.

AC DC Converters, Offline Switchers Feature Summary

• Integrates high-voltage power MOSFET and control logic for simplified design
• Supports multiple converter topologies including flyback, forward, boost, and buck
• Includes built-in auto-restart and latching thermal shutdown mechanisms

AC DC Converters, Offline Switchers Applications

• TV and monitor power supplies
• Audio amplifiers
• General-purpose offline converters

AC DC Converters, Offline Switchers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as specifications may vary by production batch. Check for obsolete status indicators before procurement planning. Ensure storage conditions meet humidity sensitivity requirements. Validate pinout compatibility with existing PCB footprints during integration.

AC DC Converters, Offline Switchers Selection Notes

Select this component for cost-sensitive applications requiring low external component count. Suitable for designs prioritizing efficiency above 90% in lower power ranges. Consider thermal management requirements due to integrated tab connection. Evaluate board layout sensitivity improvements over first-generation counterparts. Assess suitability for primary-side regulation implementations.

AC DC Converters, Offline Switchers Part Context

Part of the TOPSwitch-II family offering enhanced performance over first-generation models. Designed for universal input voltage ranges across global markets. Provides significant circuit enhancements reducing sensitivity to board layout variations. Standard 8L PDIP package option available for cost reduction in high-efficiency applications.

AC DC Converters, Offline Switchers Replacement Considerations

TOP221GN serves as a surface-mount alternative within the same family. Verify pin compatibility and thermal characteristics when substituting packages. Confirm equivalent power handling capabilities for specific application loads.