FAN7930M

Overview

The FAN7930M is a critical conduction mode (CRM) power factor correction controller manufactured by onsemi. It utilizes voltage-mode PWM with a variable turn-on time control method to achieve low total harmonic distortion. The device operates within a switching frequency range of 250 kHz to 350 kHz and is housed in an 8-SOIC package. Key protection features include overvoltage protection, open feedback protection, overcurrent protection, input voltage missing detection, and under-voltage lockout.

Feature Summary

• Employs voltage-mode PWM with variable turn-on time control for improved THD performance
• Eliminates the need for input voltage sensing networks required by current-mode CRM controllers
• Integrates comprehensive protection mechanisms including OVP, OCP, and UVLO
• Provides a PFC Ready signal to synchronize other power stages upon reaching correct output voltage

Applications

• Critical conduction mode boost PFC applications
• Compact and portable electronic devices requiring efficient power management
• Power supplies utilizing active power factor correction

Procurement Notes

Verify component authenticity through authorized onsemi distributors or certified partners. Confirm the specific suffix matches the required package and temperature grade. Review the latest datasheet for any product change notices or compliance updates. Ensure supply chain stability as availability may vary by region and lot.

Selection Notes

Select this controller for designs requiring CRM operation without complex input voltage sensing circuits. It is suitable for applications prioritizing low THD and simplified bill of materials. Compare against current-mode alternatives if input voltage ripple tolerance differs significantly from voltage-mode requirements.

Part Context

This component belongs to the FAN7930 series of power factor correction controllers. It is part of onsemi's portfolio of PMIC solutions designed for high-efficiency power conversion. The series supports various packaging options to accommodate different thermal and spatial constraints in modern electronic designs.

Replacement Considerations

Direct substitutes are not explicitly confirmed in public documentation. Evaluate alternative CRM controllers from onsemi or other manufacturers based on pin compatibility, switching frequency range, and protection feature alignment.