IR2105S Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The IR2105S is a half-bridge gate driver IC manufactured by Infineon Technologies, designed to drive IGBT and N-Channel MOSFET configurations in power management applications. This device operates with a supply voltage range of 10V to 20V and supports a maximum bootstrap voltage of 600V, making it suitable for industrial power conversion circuits.

The IR2105S carries an Obsolete product status, indicating it is no longer in active production. This necessitates identifying functionally equivalent substitute components that maintain compatibility with existing circuit designs while offering improved availability and compliance characteristics.

Substiute Parts

IR2105S

Infineon TechnologiesIn Stock: 1107IR2105S Datasheet

Current PartRFQ

IR2184SPBF

Infineon TechnologiesIn Stock: 1408IR2184SPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IR2105S is determined by the following critical parameters:

Core Functional Requirements:

• Half-bridge driven configuration with 2 independent drivers
• Support for IGBT and N-Channel MOSFET gate types
• Supply voltage range: 10V to 20V
• Bootstrap voltage capability: 600V maximum
• Non-inverting input logic
• 8-SOIC surface mount package

Performance Characteristics:

• Peak output current (source and sink capability)
• Rise and fall time specifications
• Logic voltage thresholds (VIL, VIH)

The IR2184SPBF qualifies as a direct substitute based on matching all core functional requirements and package specifications. Enhanced performance characteristics in the substitute part provide improved switching speed and output current capability while maintaining full electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

IR2184SPBF as Primary Substitute:

The IR2184SPBF is the manufacturer-recommended substitute for the obsolete IR2105S. This part maintains identical electrical specifications for all critical parameters including supply voltage range, bootstrap voltage capability, package form factor, and operating temperature range.

The IR2184SPBF offers the following advantages:

• Product Status: Not For New Designs status indicates controlled lifecycle management with continued availability
• Compliance: ROHS3 compliant, meeting current environmental and regulatory requirements
• Performance Enhancement: Improved peak output current (1.9A source, 2.3A sink versus 210mA and 360mA) and faster switching times (40ns rise, 20ns fall versus 100ns and 50ns)
• Moisture Sensitivity: MSL 2 rating with 1-year shelf life versus MSL 1 unlimited

Substitution Feasibility:

Direct pin-for-pin and functional replacement is supported. The enhanced output current and switching speed characteristics of the IR2184SPBF provide performance margin in existing circuit designs without requiring modifications to PCB layout or component values.

Frequently Asked Questions (FAQ)

Q: Can the IR2184SPBF directly replace the IR2105S in existing designs?

A: Yes. The IR2184SPBF is a direct substitute with identical package, pinout, and core electrical specifications. No circuit modifications are required for functional compatibility.

Q: What are the key differences between these parts?

A: The primary differences are product status, compliance certifications, and performance characteristics. The IR2184SPBF provides higher peak output current capability (1.9A/2.3A versus 210mA/360mA) and faster switching times (40ns/20ns versus 100ns/50ns). The IR2184SPBF is ROHS3 compliant while the IR2105S is not.

Q: Are there any logic voltage threshold differences?

A: The VIH threshold differs slightly: IR2105S specifies 3V while IR2184SPBF specifies 2.7V. Both values remain within standard logic input ranges and are compatible with typical gate driver input signal sources.

Q: Does the 8-SOIC package remain the same?

A: Yes. Both parts use identical 8-SOIC packaging (0.154" width, 3.90mm) with surface mount configuration. PCB footprints are interchangeable.

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

A: The IR2105S is Obsolete, indicating end-of-life status with no further production. The IR2184SPBF carries Not For New Designs status, meaning it remains available but is not recommended for new circuit development. For replacement applications, the IR2184SPBF provides a viable path to continued supply.

Q: Are there compliance or regulatory considerations?

A: The IR2184SPBF is ROHS3 compliant and REACH unaffected, meeting current environmental regulations. The IR2105S is RoHS non-compliant. For applications subject to environmental compliance requirements, the IR2184SPBF is the appropriate selection.