IR2105STR Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The IR2105STR 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 half-bridge topologies in industrial and consumer power conversion circuits.

The IR2105STR is classified as obsolete, which necessitates identification of active equivalent parts for new designs and ongoing production requirements. The IR2184STRPBF serves as the manufacturer-recommended substitute, offering enhanced performance characteristics while maintaining functional compatibility within the same package footprint.

Substiute Parts

IR2105STR

Infineon TechnologiesIn Stock: 29259IR2105STR Datasheet

Current PartRFQ

IR2184STRPBF

Infineon TechnologiesIn Stock: 27647IR2184STRPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IR2105STR with the IR2184STRPBF is valid based on the following electrical and mechanical compatibility criteria:

Matching Parameters:

• Driven configuration: Both devices operate in half-bridge topology
• Channel type: Both are synchronous drivers
• Number of drivers: Both provide 2 independent driver channels
• Gate type: Both support IGBT and N-Channel MOSFET switching
• Supply voltage range: Both operate within 10V ~ 20V
• Bootstrap voltage rating: Both support 600V maximum
• Package: Both use 8-SOIC surface mount package with identical 3.90mm width
• Operating temperature range: Both rated -40°C ~ 150°C (TJ)
• Input type: Both are non-inverting configurations

The IR2184STRPBF represents an enhanced version of the IR2105STR architecture, providing improved performance metrics while maintaining full functional and mechanical compatibility for direct substitution in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The IR2184STRPBF is the appropriate substitute for the obsolete IR2105STR based on the following engineering criteria:

Product Status: The IR2105STR is classified as obsolete, making the active IR2184STRPBF the necessary choice for new designs and continued production support.

Regulatory Compliance: The IR2184STRPBF achieves ROHS3 compliance, whereas the IR2105STR is non-compliant. This compliance status is critical for applications subject to environmental regulations in the European Union and equivalent jurisdictions.

Performance Enhancement: The IR2184STRPBF delivers significantly improved output current capability (1.9A source, 2.3A sink versus 210mA source, 360mA sink) and faster switching characteristics (40ns rise time, 20ns fall time versus 100ns rise time, 50ns fall time). These improvements provide enhanced gate drive capability and reduced switching losses in power conversion circuits.

Functional Compatibility: Both devices maintain identical electrical specifications for supply voltage, bootstrap voltage, operating temperature range, and package configuration, ensuring direct substitution without circuit redesign.

Moisture Sensitivity: The IR2184STRPBF carries MSL 2 (1 Year) rating compared to MSL 1 (Unlimited) for the IR2105STR. Standard moisture control procedures during storage and assembly are required.

Frequently Asked Questions (FAQ)

Q: Can the IR2184STRPBF be used as a direct replacement for the IR2105STR in existing designs?

A: Yes. Both devices share identical package geometry (8-SOIC), supply voltage range (10V ~ 20V), bootstrap voltage rating (600V), and functional configuration (half-bridge, synchronous, 2-channel). The IR2184STRPBF provides enhanced performance without requiring circuit modifications.

Q: What are the key performance differences between these devices?

A: The IR2184STRPBF provides higher peak output current (1.9A source, 2.3A sink versus 210mA source, 360mA sink) and faster switching times (40ns/20ns rise/fall versus 100ns/50ns rise/fall). These improvements reduce gate drive losses and enable faster switching transitions in power conversion applications.

Q: Are there any compliance or regulatory differences?

A: The IR2184STRPBF is ROHS3 compliant, while the IR2105STR is non-compliant. For applications subject to RoHS regulations, the IR2184STRPBF is the required choice. Both devices are REACH Unaffected and carry EAR99 ECCN classification.

Q: What is the moisture sensitivity difference, and does it affect handling?

A: The IR2105STR carries MSL 1 (Unlimited), while the IR2184STRPBF carries MSL 2 (1 Year). MSL 2 requires standard moisture control during storage and assembly. Components must be stored in dry conditions and used within one year of packaging opening.

Q: Are the logic voltage thresholds identical?

A: The logic voltage thresholds differ slightly. The IR2105STR specifies VIL/VIH of 0.8V/3V, while the IR2184STRPBF specifies 0.8V/2.7V. Both thresholds remain compatible with standard CMOS and TTL logic levels used in gate driver control circuits.

Q: Why is the IR2105STR obsolete?

A: The IR2105STR has been superseded by the IR2184STRPBF, which offers superior performance characteristics, improved regulatory compliance, and enhanced reliability. Infineon Technologies recommends the IR2184STRPBF for all new designs and production applications.