IR1155STRPBF PFC Controller - Equivalent & Substitute Parts

Part Overview

The IR1155STRPBF is a Power Factor Correction (PFC) controller IC manufactured by Infineon Technologies, designed for continuous conduction mode (CCM) applications with adjustable switching frequency. This device operates as a PMIC (Power Management Integrated Circuit) in an 8-SOIC surface mount package.

The IR1155STRPBF carries an Obsolete product status. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications currently utilizing this controller.

Substiute Parts

IR1155STRPBF

Infineon TechnologiesIn Stock: 30715IR1155STRPBF Datasheet

Current PartRFQ

UCC28180D

Texas InstrumentsIn Stock: 19260UCC28180D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IR1155STRPBF is determined by the following critical parameters:

• Operating Mode: Continuous Conduction (CCM) operation is mandatory
• Package Compatibility: 8-SOIC surface mount package with 0.154" (3.90mm) width
• Supply Voltage: Substitute must accommodate the 12V ~ 19V supply range or higher
• Functional Classification: PFC controller IC for power factor correction applications
• Compliance Standards: RoHS3 compliance and EAR99 ECCN classification

The UCC28180D from Texas Instruments meets these substitution criteria through identical package geometry, compatible operating mode, and overlapping electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

The UCC28180D qualifies as a direct substitute for the IR1155STRPBF based on the following engineering criteria:

Package Compatibility: Both devices utilize identical 8-SOIC surface mount packaging with 0.154" (3.90mm) width, enabling direct PCB footprint compatibility without layout modifications.

Functional Equivalence: Both ICs operate in continuous conduction mode (CCM) for PFC applications, maintaining the same control topology and operational characteristics required by existing designs.

Compliance Status: The UCC28180D maintains ROHS3 compliance and EAR99 ECCN classification, matching the regulatory framework of the original part. The substitute carries Active product status, ensuring long-term availability and supply chain stability compared to the Obsolete IR1155STRPBF.

Electrical Compatibility: The UCC28180D supply voltage specification of 21V encompasses the IR1155STRPBF operating range of 12V ~ 19V. The substitute's lower startup current (75 µA versus 175 µA) and improved moisture sensitivity rating (MSL 1 Unlimited versus MSL 2 1 Year) represent enhanced performance characteristics.

Temperature Range: The UCC28180D extended operating temperature range (-40°C ~ 125°C) exceeds the original specification (-25°C ~ 125°C), providing broader environmental compatibility.

Frequently Asked Questions (FAQ)

Q: Can the UCC28180D be used as a direct replacement for the IR1155STRPBF without PCB modifications?

A: Yes. Both devices share identical 8-SOIC package geometry and pin configuration, allowing direct substitution on existing PCBs without layout changes.

Q: What are the key differences between these two PFC controllers?

A: The primary differences are manufacturer origin (Infineon versus Texas Instruments), product status (Obsolete versus Active), and specified switching frequency range. The UCC28180D provides a defined frequency range (18kHz ~ 250kHz) compared to the IR1155STRPBF adjustable specification. The UCC28180D also features lower startup current and superior moisture sensitivity characteristics.

Q: Is the UCC28180D supply voltage specification compatible with designs using the IR1155STRPBF?

A: Yes. The UCC28180D 21V supply specification accommodates the full 12V ~ 19V operating range of the IR1155STRPBF, ensuring voltage compatibility across all design conditions.

Q: What is the significance of the product status difference?

A: The IR1155STRPBF Obsolete status indicates discontinued manufacturing and limited future availability. The UCC28180D Active status confirms ongoing production, established supply channels, and manufacturer support, making it suitable for long-term production requirements.

Q: Are there any compliance or certification concerns when substituting these parts?

A: No. Both devices maintain ROHS3 compliance and EAR99 ECCN classification. The UCC28180D meets all regulatory requirements applicable to the original design.