TOP223Y

AC DC Converters, Offline Switchers Overview

The TOP223Y is a three-terminal off-line PWM switch from the second-generation TOPSwitch-II family by Power Integrations. It integrates a high-voltage power MOSFET with current-mode control logic, oscillator, and thermal shutdown into a single package. The device supports flyback, forward, boost, and buck topologies for AC-DC conversion. Key electrical parameters include a switching frequency of 100 kHz, a maximum duty cycle of 67%, and an input voltage range of 85 VAC to 265 VAC. It features a 700 V breakdown voltage and operates within a junction temperature range of -40°C to 150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage power MOSFET with current-mode control logic, oscillator, and thermal shutdown in a single package
• Supports multiple converter topologies including flyback, forward, boost, and buck configurations
• Features built-in auto-restart and current limiting for system-level protection
• Includes latching thermal shutdown to prevent damage during overheating events

AC DC Converters, Offline Switchers Applications

• TV and monitor power supplies
• Audio amplifier power circuits
• General-purpose low-cost AC-DC converters
• Universal input power adapters

AC DC Converters, Offline Switchers Procurement Notes

Verify component authenticity through authorized distributors or original manufacturer channels. Confirm lot codes and date codes against current production status. Check RoHS compliance requirements as older batches may contain lead. Validate pinout compatibility with TO-220-3 mounting before integration. Request datasheet revisions to ensure alignment with latest design guidelines.

AC DC Converters, Offline Switchers Selection Notes

Evaluate thermal management requirements given the integrated MOSFET and lack of external heat sink options in standard packages. Consider board layout sensitivity improvements inherent to the second-generation architecture. Assess whether primary-side regulation meets output accuracy needs without opto-couplers. Verify that the 100 kHz switching frequency aligns with EMI constraints and transformer design capabilities.

AC DC Converters, Offline Switchers Part Context

The TOP223Y belongs to the TOPSwitch-II family, which offers enhanced cost-effectiveness and reduced component count compared to first-generation models. This series targets applications requiring reliable off-line power conversion with minimal external circuitry. The integration of control logic and power switching simplifies design processes and reduces time to market for consumer electronics and industrial power supplies.

AC DC Converters, Offline Switchers Replacement Considerations

TOP223YN serves as a lead-free variant of this component. Cross-reference pinouts and electrical specifications when substituting. Ensure thermal performance remains adequate under identical operating conditions. Verify that regulatory compliance requirements match the target application standards.