FS6X1220RD

AC DC Converters, Offline Switchers Overview

The FS6X1220RD is a Fairchild Power Switch (FPS) integrating a current-mode PWM controller with a high-voltage MOSFET in a D2PAK-5 package. Designed for offline DC-DC converters, it supports flyback and forward topologies at a switching frequency of 300kHz. The device operates within an input voltage range of 10V to 23V and delivers a maximum output current of 23.7A. It functions reliably across a temperature range of -25°C to 85°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates current-mode PWM controller with high-voltage MOSFET
• Optimized for minimal external component count
• Supports flyback and forward converter topologies

AC DC Converters, Offline Switchers Applications

• Offline DC-DC converters
• Flyback power supply designs
• Forward converter applications

AC DC Converters, Offline Switchers Procurement Notes

Verify the manufacturer designation carefully, as documentation sources may list either Fairchild Semiconductor or ON Semiconductor due to corporate acquisition history. Confirm the specific suffix 'RD' corresponds to the required tape-and-reel packaging configuration. Ensure the datasheet version matches the production batch requirements for regulatory compliance and pinout consistency.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring integrated control and power stages in compact form factors. The fixed 300kHz switching frequency simplifies magnetics design compared to variable-frequency alternatives. Consider the thermal performance of the D2PAK-5 package relative to the expected load current and ambient operating conditions to ensure reliable operation within the specified temperature limits.

AC DC Converters, Offline Switchers Part Context

This part belongs to the FPS series, which combines power switching and control logic into single packages. The series targets cost-sensitive offline power supplies by reducing bill-of-materials through integration. The FS6X1220RD specifically addresses mid-power requirements where space constraints and assembly simplicity are critical design drivers.

AC DC Converters, Offline Switchers Replacement Considerations

Consult official substitution guides for equivalent FPS devices from the same manufacturer family. Verify pin compatibility and electrical specifications before replacing with cross-manufacturer components.