FAN7631SJ

Power Supply Controllers, Monitors Overview

The FAN7631SJ is a Pulse Frequency Modulation (PFM) controller designed for high-efficiency half-bridge resonant converters. It integrates a high-side gate driver, a precision current-controlled oscillator, and comprehensive protection features. The device supports zero-voltage switching (ZVS) to reduce switching losses and electromagnetic interference. Operating frequencies reach up to 600 kHz with programmable dead time. Supply voltage ranges from 11.1 V to 21 V, with an operating temperature range of -40°C to +130°C. It utilizes a 16-SOP package.

Power Supply Controllers, Monitors Feature Summary

• Integrates a high-side gate driver with high peak currents for efficient resonant converter operation
• Supports Zero-Voltage Switching (ZVS) to minimize switching losses and noise
• Includes multiple protection mechanisms such as overvoltage, overcurrent, and thermal shutdown
• Features programmable dead time and frequency limiting via pulse skipping

Power Supply Controllers, Monitors Applications

• Series resonant converters
• Parallel resonant converters
• LLC resonant converters

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix against official documentation, as it may indicate packaging variations or material changes. Confirm end-of-life status and last-time-buy dates through authorized channels. Ensure compatibility with existing PCB footprints and thermal management requirements before procurement.

Power Supply Controllers, Monitors Selection Notes

Select this component for designs requiring high-frequency resonant topologies with integrated drive capabilities. Evaluate the need for ZVS implementation to optimize efficiency. Consider the wide operating temperature range for harsh environments. Verify that the supply voltage range aligns with the system's power rails.

Power Supply Controllers, Monitors Part Context

This part belongs to the FAN7631 series of resonant controllers. It is manufactured by onsemi. The device is categorized under Power Management ICs (PMIC). It is designed to simplify the design of robust resonant converters while improving performance metrics.

Power Supply Controllers, Monitors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Consult manufacturer cross-reference guides for potential alternatives.