IR1150IPBF Equivalent & Substitute Parts

Part Overview

The IR1150IPBF is a Power Factor Correction (PFC) controller IC manufactured by Infineon Technologies, designed for continuous conduction mode (CCM) operation at 200kHz switching frequency. This device operates in the 8-PDIP through-hole package format and is rated for supply voltages between 15V and 20V with a startup current of 175µA.

The IR1150IPBF is classified as obsolete, making identification of functionally equivalent substitute components necessary for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

Substiute Parts

IR1150IPBF

Infineon TechnologiesIn Stock: 45115IR1150IPBF Datasheet

Current PartRFQ

UC3852N

Texas InstrumentsIn Stock: 5180UC3852N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IR1150IPBF is determined by the following critical parameters:

• Functional Mode: Continuous Conduction (CCM) operation at 200kHz switching frequency
• Package Compatibility: 8-DIP (0.300", 7.62mm) through-hole package
• Supply Voltage Range: Must accommodate the system's operating voltage window
• Startup Current: Must be compatible with system bias supply design
• Operating Temperature Range: Must meet or exceed the application's thermal requirements
• Pin Configuration: Electrical and mechanical pin compatibility for direct board-level substitution

The UC3852N from Texas Instruments meets the core functional requirements of CCM PFC control at 200kHz with identical package geometry, enabling direct substitution in through-hole PCB designs.

Parameter Comparison

Engineering Selection Recommendations

The UC3852N qualifies as a direct functional substitute for the IR1150IPBF based on matching core electrical specifications: identical 200kHz CCM switching frequency, compatible 8-DIP package geometry, and overlapping supply voltage range within the IR1150IPBF operating window.

The UC3852N carries Last Time Buy status, indicating limited future availability. The UC3852N exhibits a wider supply voltage range (14.5V – 30V) compared to the IR1150IPBF (15V – 20V), providing greater design flexibility for systems with variable input voltages. The startup current of the UC3852N (400µA) is higher than the IR1150IPBF (175µA), requiring verification that the system bias supply can accommodate this increased inrush current.

The UC3852N operating temperature range (0°C to +70°C) is narrower than the IR1150IPBF (-25°C to +85°C). Applications requiring operation below 0°C or above +70°C must evaluate alternative solutions or implement external thermal management.

The UC3852N is ROHS3 compliant, supporting modern regulatory requirements for new designs and manufacturing environments.

Frequently Asked Questions (FAQ)

Q: Can the UC3852N directly replace the IR1150IPBF on existing PCBs?

A: Yes. Both devices use identical 8-DIP (0.300", 7.62mm) through-hole package geometry with compatible pin configurations for PFC controller applications. Direct board-level substitution is mechanically and electrically feasible.

Q: What are the key differences between these parts?

A: The primary differences are supply voltage range, startup current, and operating temperature range. The UC3852N accepts 14.5V – 30V (versus 15V – 20V for the IR1150IPBF), draws 400µA startup current (versus 175µA), and operates from 0°C to +70°C (versus -25°C to +85°C). System design must accommodate these parameter variations.

Q: Is the higher startup current of the UC3852N a concern?

A: The 400µA startup current of the UC3852N versus 175µA for the IR1150IPBF requires verification that the system bias supply can deliver this increased inrush current without voltage sag. Designs with marginal bias supply capacity may require circuit modifications.

Q: Does the narrower temperature range of the UC3852N affect substitution?

A: Applications operating below 0°C or above +70°C cannot use the UC3852N. Systems designed for the full -25°C to +85°C range of the IR1150IPBF must either implement external thermal management or identify alternative solutions.

Q: Are there regulatory or compliance considerations?

A: The UC3852N is ROHS3 compliant, supporting modern manufacturing and environmental regulations. Both parts carry REACH Unaffected status. New designs should prioritize the UC3852N for regulatory alignment.

Q: What is the availability status of these parts?

A: The IR1150IPBF is obsolete with no new production. The UC3852N is Last Time Buy, indicating limited future availability. Long-term production programs should evaluate alternative PFC controller solutions with active manufacturing status.