IRS2580DSPBF

Overview

The IRS2580DSPBF is a Power Factor Correction (PFC) controller IC from Infineon Technologies, designed for Critical Conduction Mode (CRM) operation. It is housed in an 8-lead SOIC package and belongs to the Combo8 series. The device integrates high-voltage startup circuitry and features a fixed off-time architecture to regulate output voltage while maintaining high power factor across varying line and load conditions.

Feature Summary

• Supports Critical Conduction Mode (CRM) PFC applications
• Integrates high-voltage startup circuit for simplified design
• Fixed off-time control architecture for stable regulation

Applications

• Offline LED lighting drivers
• Universal input AC-DC adapters
• Consumer appliance power supplies

Procurement Notes

Verify component status as the datasheet indicates 'Obsolete' or 'End of Life' status. Confirm availability through authorized distributors or secondary markets. Ensure compatibility with existing PCB layouts if replacing active inventory. Check for RoHS compliance documentation specific to the manufacturing batch.

Selection Notes

Select this component for cost-sensitive CRM PFC designs requiring minimal external components. Evaluate thermal performance within the SOIC-8 package constraints. Consider the fixed off-time limitation when designing for wide input voltage ranges or specific ripple requirements compared to variable frequency controllers.

Part Context

Part of the Infineon Combo8 family of PFC controllers. Designed to replace legacy discrete solutions or older generation PFC chips. Offers integration benefits over standard MOSFET-based CRM implementations by including gate drive and protection logic on-chip.

Replacement Considerations

Check for direct pin-compatible alternatives within the IRS2580 series or newer generations such as the IRS2589. Verify functional equivalence regarding off-time duration and UVLO thresholds before substitution.