FAN7930MX

Overview

The FAN7930MX is a Critical Conduction Mode (CRM) Power Factor Correction controller manufactured by onsemi. It integrates a high-voltage startup circuit and operates from a wide supply voltage range. The device features an internal oscillator with frequency foldback to optimize efficiency at light loads. It provides cycle-by-cycle peak current control for stable operation in PFC applications.

Feature Summary

• Integrates high-voltage startup circuit for simplified design
• Supports Critical Conduction Mode (CRM) operation
• Includes internal oscillator with frequency foldback capability

Applications

• Power factor correction in AC-DC converters
• Universal input power supplies
• Adapters and chargers

Procurement Notes

Verify the specific suffix against the manufacturer datasheet to confirm package type and tape/reel specifications. Ensure the component matches the required RoHS compliance status for your assembly process. Cross-reference the ordering code with official onsemi documentation to avoid substitution errors during procurement.

Selection Notes

Select this controller for applications requiring CRM PFC topology. It is suitable for designs needing integrated startup functionality without external bias windings. Consider the operating frequency range and thermal requirements when designing the heat dissipation strategy for the target application environment.

Part Context

The FAN7930MX belongs to the FAN7930 series of power factor correction controllers. It is designed for medium-power applications where efficiency and component count are critical. The device complements onsemi's portfolio of power management solutions for consumer and industrial electronics.

Replacement Considerations

Consult the onsemi datasheet for direct pin-compatible alternatives within the FAN79xx series. Verify electrical parameters such as switching frequency and startup voltage before substituting with other CRM controllers.