FAN4800ASMY-F116

Overview

The FAN4800ASMY-F116 is a power factor correction and pulse width modulation controller combination from onsemi. It integrates PFC and PWM control functions in a single package, supporting continuous conduction mode (CCM) and discontinuous conduction mode (DCM). The device operates with a switching frequency of 64 kHz and features an average current mode for the PFC stage. It utilizes voltage-mode control for the PWM section and includes a post regulator. The component is housed in a 16-pin SOIC surface-mount package and is designed for universal line input applications ranging from 85 VAC to 270 VAC.

Feature Summary

• Integrates both power factor correction and pulse width modulation controllers within a single integrated circuit.
• Supports average current mode operation for the PFC stage to enhance power quality.
• Includes a dedicated post regulator for auxiliary output management.
• Features soft-start functionality and under-voltage protection mechanisms.

Applications

• High-performance power supplies utilizing boost PFC stages
• Universal input AC-DC conversion systems
• Power factor correction circuits requiring combined control logic

Procurement Notes

Verify the specific suffix -F116 against official onsemi documentation, as standard listings typically reference FAN4800ASMY. Confirm availability status, as this series may be subject to end-of-life notices or limited distribution channels. Ensure compatibility with existing PCB footprints and validate that the operating temperature range meets system requirements before finalizing procurement decisions.

Selection Notes

Select this component for designs requiring integrated PFC and PWM control to reduce external component count. It is suitable for applications needing precise current mode control for the PFC stage. Consider the 16-SOIC package constraints for thermal management and board space. Verify that the 64 kHz switching frequency aligns with electromagnetic interference requirements and transformer design specifications.

Part Context

This part belongs to the FAN4800 family of power management ICs, which are designed to replace older generations like the ML4800. The family offers improved efficiency and reduced standby power consumption. These controllers are widely used in offline power supply designs where high power factor and low harmonic distortion are critical compliance requirements.

Replacement Considerations

Direct replacements include the FAN4800ASMY and FAN4800ANY. When substituting, adjust the RT and CT components to maintain the 64 kHz switching frequency. Update the RAC resistor value to between 6 mΩ and 8 mΩ for proper current sensing calibration. Verify VRMS pin voltage levels at minimum input voltage to ensure correct universal input operation.