IRS25803DSPBF

Overview

The IRS25803DSPBF is a Power Factor Correction controller from Infineon Technologies, operating in Critical Conduction Mode (CRM). It features an integrated high-voltage startup circuit and operates with a supply voltage up to 470V. The device is housed in an 8-SOIC package and supports CMOS and TTL logic inputs. Key electrical parameters include a maximum propagation delay of 210 ns, rise time of 70 ns, and fall time of 35 ns. It functions within a temperature range of -40°C to +125°C.

Feature Summary

• Supports Critical Conduction Mode (CRM) for efficient power factor correction
• Integrates a high-voltage startup circuit eliminating external components
• Compatible with standard CMOS and TTL logic input levels

Applications

• Power Factor Correction (PFC) stages in AC-DC converters
• Efficient power conversion systems requiring CRM operation
• Industrial power supplies and motor drives

Procurement Notes

Verify the specific suffix 'DSPBF' against official Infineon documentation to confirm package type and RoHS compliance status. Cross-reference the manufacturer part number with current product lifecycle notices, as availability may be restricted or subject to limited production runs. Ensure the ordering information matches the exact datasheet revision for accurate pinout and electrical characteristics.

Selection Notes

Select this component when designing PFC circuits that require Critical Conduction Mode operation to minimize switching losses at light loads. Consider the integrated high-voltage startup feature if reducing external component count is a priority. Verify that the 470V supply capability aligns with the system's bus voltage requirements and that the 8-SOIC package fits the PCB layout constraints.

Part Context

The IRS25803DSPBF belongs to the Combo8 series of power management ICs from Infineon Technologies. It is categorized under PMIC - PFC controllers. This part is designed for applications demanding high efficiency and reduced bill-of-materials through integrated functionalities such as the high-voltage startup circuit, distinguishing it from basic PWM controllers.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult official Infineon replacement guides or distributor cross-reference tools for verified alternatives.