FAN7930BM

Overview

The FAN7930BM is a Critical Conduction Mode (CRM) Power Factor Correction controller from onsemi, designed for boost PFC applications. It utilizes voltage mode PWM control and operates within an industrial temperature range of -40°C to +125°C. The device features a switch frequency of 300 kHz and is housed in an SOP-8 surface-mount package. Key technical attributes include integrated overvoltage protection, zero-current detection for valley switching, and internal THD optimization. It supports wide input voltage ranges and includes soft-start functionality to minimize startup stress.

Feature Summary

• Voltage mode PWM control eliminates the need for rectified AC line voltage sensing, reducing power loss in the input network.
• Integrated THD optimizer simplifies circuit design by removing the requirement for external resistors for harmonic distortion correction.
• Zero-current detection ensures MOSFET conduction at zero inductor current, enhancing efficiency through valley switching.
• Comprehensive protection suite includes overvoltage, open-loop feedback, overcurrent, and undervoltage lockout mechanisms.

Applications

• Boost Power Factor Correction circuits
• High-efficiency AC/DC power supplies
• LED lighting drivers

Procurement Notes

Verify the specific suffix against the manufacturer's official documentation to confirm pinout compatibility and electrical specifications. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the ordering part number with the latest datasheet revision to avoid discrepancies in functional descriptions or package dimensions.

Selection Notes

Select this controller for designs requiring simplified input sensing and low total harmonic distortion without external compensation components. It is suitable for applications where minimizing component count and maximizing efficiency in critical conduction mode operation are priorities. Evaluate the thermal performance within the specified operating temperature range during system integration.

Part Context

The FAN7930B series belongs to onsemi's portfolio of power management ICs focused on active PFC solutions. This family targets high-performance power conversion systems where power quality and energy efficiency are critical. The device represents a specialized solution for boundary and critical conduction mode operations in modern electronic power supplies.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.