FSFR1800XS

AC DC Converters, Offline Switchers Overview

The FSFR1800XS is a high-frequency half-bridge resonant converter IC from onsemi, designed for power factor correction and DC-DC conversion. It integrates a Power MOSFET and a fast recovery diode in a single SIP-9 package. The device supports a maximum operating voltage of 400 V and delivers a continuous output current of 7 A, with a rated power capacity of 260 W. It features a low on-resistance of 0.95 Ω. The component operates within a temperature range of -40°C to +135°C and utilizes through-hole mounting.

AC DC Converters, Offline Switchers Feature Summary

• Integrates Power MOSFET and fast recovery diode for simplified design
• Optimized for high-efficiency half-bridge resonant converters
• Provides robust protection features for reliable operation

AC DC Converters, Offline Switchers Applications

• Power factor correction circuits
• High-frequency DC-DC converters
• Industrial power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix (XS) against official datasheets to confirm pinout and thermal characteristics. Confirm end-of-life status as distributor data indicates potential discontinuation. Ensure compatibility with existing PCB footprints for SIP-9 packages before finalizing procurement decisions.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring integrated switching and rectification in a compact form factor. Consider the 0.95 Ω on-resistance for conduction loss calculations. Verify that the 400 V rating meets system voltage requirements. Evaluate thermal management needs given the 260 W power rating and SIP packaging constraints.

AC DC Converters, Offline Switchers Part Context

This part belongs to the FSFR-XS series, which includes high-frequency integrated power switches. The series aims to simplify resonant converter designs by combining active and passive switching elements. It targets applications demanding high power density and efficiency in power supply architectures.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct substitutes within the FSFR-XS family or comparable integrated half-bridge controllers. Verify pin compatibility and electrical specifications such as voltage ratings and current capabilities before substitution.