PFS729EG

Overview

The PFS729EG is a discontinued Power Factor Correction (PFC) controller from the HiperPFS series by Power Integrations. It integrates a continuous conduction mode (CCM) boost PFC controller, gate driver, and high-voltage power MOSFET into a single low-profile eSIP-7 package. The device supports an input voltage range of 90 VAC and delivers a maximum output power of 320 W. Operating frequencies range from 24 kHz to 95 kHz, with a functional temperature range spanning from -40°C to +150°C. Designed for through-hole installation, this component eliminates external current sense resistors to reduce power loss and EMI filtering requirements.

Feature Summary

• Integrates CCM boost PFC controller, gate driver, and high-voltage power MOSFET in a single eSIP package
• Eliminates need for external current sense resistors to minimize power loss
• Utilizes spread spectrum control technique to adjust switching frequency based on load and line conditions
• Includes comprehensive protection features such as soft-start, UV/OV protection, and hysteretic thermal shutdown

Applications

• PC power supplies
• High-power LED lighting systems
• Large power adapters
• Printers and industrial equipment
• LCD TVs and video game consoles

Procurement Notes

The PFS729EG is officially marked as End-of-Life (EOL) and discontinued by Power Integrations. Distributors such as Mouser indicate that the product is not currently sold in many regions due to its discontinued status. Engineers must verify availability through authorized channels or consider alternative replacement components from the same manufacturer family, as standard inventory cannot be guaranteed.

Selection Notes

This component is suitable for designs requiring integrated PFC functionality up to 320 W without external current sensing. Its wide operating temperature range (-40°C to +150°C) and through-hole eSIP-7 packaging support robust industrial and consumer applications. Selection should account for the device's discontinuation status and ensure compatibility with existing board layouts if replacing older designs.

Part Context

The PFS729EG belongs to the HiperPFS series, which combines PFC control and power switching in a compact form factor. This series is designed to meet stringent efficiency standards, including EN61000-3-2 Class C and D, while maintaining high efficiency across the entire load range. The integration simplifies design complexity compared to discrete solutions.

Replacement Considerations

As the PFS729EG is discontinued, engineers should consult Power Integrations' official documentation for recommended replacements within the HiperPFS family or newer generations. Verify pinout compatibility and electrical specifications before substituting with equivalent parts.