TOP221G-TL

AC DC Converters, Offline Switchers Overview

The TOP221G-TL is an offline switcher from the TOPSwitch-II family, integrating a high-voltage power MOSFET with a current-mode controller. It operates at a switching frequency of 100 kHz and supports Boost, Buck, Flyback, and Forward topologies. The device features a 700 V breakdown voltage and accepts input voltages from 85 V to 265 VAC. It provides up to 9 W of output power with a maximum duty cycle of 70% and a supply current of 1.2 mA. The component is housed in an 8-SMD package and functions 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 a current-mode controller for compact design
• Supports versatile converter topologies including flyback, forward, buck, and boost
• Includes comprehensive protection mechanisms such as overcurrent and thermal shutdown

AC DC Converters, Offline Switchers Applications

• Offline AC-DC converters
• Battery chargers
• General-purpose power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'G' against official manufacturer documentation to confirm pinout and functional specifications, as variations exist within the TOP221 series. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Ensure the source document explicitly lists this exact part number to avoid confusion with similar models like the TOP221GN or TOP221YN.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring integrated power switching and control in a small surface-mount package. It is suitable for low-power offline designs where high voltage isolation is required. Consider the 100 kHz switching frequency for balancing efficiency and EMI. Verify that the 700 V drain-source rating meets the peak voltage requirements of the target transformer design.

AC DC Converters, Offline Switchers Part Context

The TOP221G-TL belongs to the TOPSwitch-II family, which combines a high-voltage switched-current source, oscillator, programmable constant current source, thermal shutdown, and other control logic into a single monolithic IC. This integration simplifies the design of off-line switcher power supplies by reducing the external component count significantly compared to discrete solutions.

AC DC Converters, Offline Switchers Replacement Considerations

TOP221GN-TL

AC DC Converters, Offline Switchers FAQ

What is the maximum operating junction temperature?

The maximum operating junction temperature is 150°C.

Which converter topologies are supported?

The device supports Boost, Buck, Flyback, and Forward topologies.