IRS25803DSTRPBF

Overview

The IRS25803DSTRPBF is a Power Factor Correction (PFC) controller operating in Critical Conduction Mode (CRM). It is designed for single-stage AC-DC converters and integrates high-voltage startup circuitry. The device supports supply voltages up to 470 V, enabling direct connection to the mains rectified line without external bias supplies. Packaged in an 8-SOIC surface-mount format, it combines control logic with power stage driving capabilities for efficient energy conversion.

Feature Summary

• Integrates high-voltage startup circuitry for direct mains connection
• Operates in Critical Conduction Mode (CRM) for reduced switching losses
• Supports single-stage AC-DC converter topologies

Applications

• Single-stage AC-DC power supplies
• LED drivers requiring PFC
• Universal input adapter designs

Procurement Notes

Verify the specific suffix DSTRPBF against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with the intended thermal management solution for the SOIC-8 package. Cross-reference the part number with official Infineon channels to confirm current production status and availability constraints.

Selection Notes

Select this component when designing single-stage PFC applications requiring integrated high-voltage startup. It is suitable for systems needing CRM operation to minimize turn-off losses. Consider the 8-SOIC package constraints for PCB layout and thermal dissipation requirements relative to the expected power level.

Part Context

This part belongs to the IRS2580 family of PFC controllers from Infineon Technologies. It is specifically engineered for cost-effective, high-efficiency power factor correction in universal input applications. The integration of the bootstrap diode and high-voltage startup reduces external component count compared to discrete solutions.

Replacement Considerations

Check for pin-compatible alternatives within the IRS2580 series or other CRM PFC controllers from Infineon. Verify that any substitute maintains the 470 V supply capability and CRM control loop characteristics required for the specific application design.