FAN9672Q

Overview

The FAN9672Q is a two-channel interleaved continuous conduction mode (CCM) power factor correction controller designed for high-power AC-DC pre-regulators. It operates within a programmable frequency range of 18 kHz to 40 kHz or 55 kHz to 75 kHz. The device supports an input voltage brownout protection and features a trifault detect function. It is housed in a 32-pin LQFP package with an operating temperature range from -40°C to +105°C.

Feature Summary

• Interleaved two-channel control reduces input and output ripple currents
• Slave channel management improves load transient response at lower power levels
• Integrated protection functions including peak current limiting and sag protection

Applications

• High power AC-DC power supplies
• Server and telecom power supplies
• Uninterruptible power supply (UPS) systems
• Industrial welding and power supplies

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and environmental compliance. Ensure design compatibility with the required switching frequency range and input voltage specifications. Confirm moisture sensitivity level handling requirements during assembly. Cross-reference the latest datasheet revision for any updates to pin configurations or electrical characteristics before finalizing procurement.

Selection Notes

Select this component for applications requiring high efficiency and low conducted EMI through interleaved operation. Consider the slave channel management feature for optimizing performance across varying load conditions. Evaluate the thermal dissipation capabilities given the specified power dissipation limits. Ensure the control loop design accommodates the differential current sensing and average current-mode control architecture.

Part Context

The FAN9672Q belongs to the FAN9672 series of power factor correction controllers. It is part of onsemi's portfolio of PMIC solutions aimed at meeting stringent electromagnetic interference standards such as IEC1000-3-2. The device integrates advanced control algorithms to simplify the design of compliant power factor correction stages.

Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify functional equivalence regarding interleaved control and protection features.