PFS7624H/L

Overview

The PFS7624H/L is a HiperPFS-4 power factor correction controller integrating a 600 V power MOSFET and diode option in a single low-profile package. It operates at a switching frequency of 60 kHz with a maximum supply voltage of 15 V and supports operation up to 150 °C. The device utilizes an innovative control technique that adjusts switching frequency over output load, input line voltage, and input line cycle to maximize efficiency across the entire load range.

Feature Summary

• Eliminates external current sense resistors by using an innovative control technique, thereby reducing associated power loss.
• Minimizes EMI filtering requirements through a wide bandwidth spread spectrum effect.
• Features an integrated non-linear error amplifier for enhanced load transient response.
• Provides comprehensive protection including UV, OV, brown-in/out, hysteretic thermal shutdown, and SOA protection.

Applications

• High PF and efficiency power supplies across load ranges
• Offline power converters requiring low no-load power consumption
• Applications needing user programmable Power Good signals

Procurement Notes

Verify the specific suffix (H or L) against the manufacturer's official datasheet to confirm pinout and functional variations. Ensure the selected variant matches the required package type and voltage ratings for the target design. Cross-reference ordering information directly with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component for designs prioritizing high efficiency at light loads and reduced EMI filtering needs. The integrated MOSFET simplifies layout compared to discrete solutions. Consider the 600 V rating and 60 kHz frequency when designing the magnetics and thermal management systems for the application.

Part Context

Part of the HiperPFS-4 family from Power Integrations, designed for offline power factor correction. This series combines digital techniques for line monitoring and analog techniques for core control to maintain extremely low no-load power consumption while enhancing power factor.

Replacement Considerations

Consult official substitution guides for compatible HiperPFS-4 variants. Verify pin compatibility and electrical specifications before replacing existing designs with alternative part numbers from the same manufacturer.

FAQ

How does the PFS7624H/L handle current sensing?

It eliminates the need for external current sense resistors by using an innovative control technique that adjusts switching frequency based on load and line conditions.

What protection features are included?

The device includes UV, OV, brown-in/out, hysteretic thermal shutdown, cycle-by-cycle current limit, Safe Operating Area (SOA) protection, and pin-to-pin short-circuit protection.