IR2109STR Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The IR2109STR is a half-bridge gate driver IC manufactured by Infineon Technologies, designed to drive IGBT and N-Channel MOSFET devices in synchronous half-bridge configurations. This component operates with a supply voltage range of 10V to 20V and provides independent high-side and low-side gate drive outputs with 200mA source and 350mA sink peak output current capability.

The IR2109STR is classified as obsolete, which necessitates identification of equivalent and substitute parts for new designs and ongoing production requirements. Active alternatives with compatible electrical and mechanical specifications are available to ensure design continuity and supply chain flexibility.

Substiute Parts

IR2109STR

Infineon TechnologiesIn Stock: 15616IR2109STR Datasheet

Current PartRFQ

IR2109STRPBF

Infineon TechnologiesIn Stock: 19683IR2109STRPBF Datasheet

DirectRFQ

FAN7080MX-GF085

onsemiIn Stock: 5902FAN7080MX-GF085 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IR2109STR are identified based on strict electrical and mechanical compatibility criteria. The following parameters define acceptable substitution:

Critical Matching Parameters:

• Driven Configuration: Half-Bridge
• Channel Type: Synchronous
• Number of Drivers: 2
• Gate Type: IGBT, N-Channel MOSFET
• Input Type: Non-Inverting
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• High Side Voltage - Max (Bootstrap): 600V minimum
• Operating Temperature Range: -40°C ~ 150°C minimum

Allowable Parameter Variations:

• Voltage - Supply: Minimum 10V acceptable; maximum 20V or higher acceptable
• Logic Voltage - VIL, VIH: Variations within standard logic levels acceptable
• Current - Peak Output: Higher values acceptable; lower values not acceptable
• Rise / Fall Time: Faster switching acceptable; slower switching not acceptable

Parameter Comparison

Engineering Selection Recommendations

IR2109STRPBF (Direct Equivalent): This part is the direct equivalent from Infineon Technologies with identical electrical specifications to the IR2109STR. The IR2109STRPBF is active in production and offers ROHS3 compliance, addressing regulatory requirements of the obsolete predecessor. This part is the primary choice for direct replacement in existing designs without circuit modification. Packaging is available in Cut Tape and Digi-Reel formats.

FAN7080MX-GF085 (Manufacturer Recommended Alternative): The FAN7080MX-GF085 from onsemi is a manufacturer-recommended substitute that meets all critical electrical and mechanical compatibility requirements. This part provides enhanced performance characteristics including higher peak output current (300mA source, 600mA sink versus 200mA, 350mA), faster switching times (40ns rise, 25ns fall versus 150ns, 50ns), and extended supply voltage range (5.5V minimum versus 10V). The FAN7080MX-GF085 carries AEC-Q100 automotive qualification and ROHS3 compliance. Selection of this part is appropriate for applications requiring improved performance margins or automotive-grade reliability. Moisture sensitivity level is higher (MSL 3) requiring controlled storage conditions.

Both substitute parts maintain identical half-bridge synchronous driver configuration, gate type compatibility, bootstrap voltage capability, and operating temperature range as the IR2109STR.

Frequently Asked Questions (FAQ)

Q: Can IR2109STRPBF be used as a direct replacement for IR2109STR? A: Yes. The IR2109STRPBF is electrically and mechanically identical to the IR2109STR with matching supply voltage range (10V ~ 20V), logic voltage thresholds (0.8V, 2.9V), peak output current (200mA source, 350mA sink), and package configuration (8-SOIC). The primary difference is product status (active versus obsolete) and regulatory compliance (ROHS3 compliant).

Q: What are the key differences between IR2109STRPBF and FAN7080MX-GF085? A: Both parts are functionally compatible half-bridge gate drivers in 8-SOIC packages. The FAN7080MX-GF085 provides higher peak output current capability (300mA source, 600mA sink), faster switching performance (40ns rise, 25ns fall), and lower minimum supply voltage (5.5V). The FAN7080MX-GF085 includes AEC-Q100 automotive qualification. The IR2109STRPBF maintains exact electrical specifications of the original IR2109STR.

Q: Are package dimensions identical across all three parts? A: Yes. All three parts use the 8-SOIC package with 0.154" width (3.90mm), ensuring identical PCB footprint and mounting compatibility.

Q: What is the impact of different Moisture Sensitivity Levels (MSL)? A: MSL rating indicates maximum storage time at specified humidity before component degradation. IR2109STR has MSL 1 (unlimited storage), IR2109STRPBF has MSL 2 (1 year), and FAN7080MX-GF085 has MSL 3 (168 hours). Higher MSL ratings require more stringent moisture control during storage and handling.

Q: Can FAN7080MX-GF085 be used in applications originally designed for IR2109STR? A: Yes, with circuit verification. The FAN7080MX-GF085 meets all critical electrical and mechanical requirements. Enhanced performance characteristics (higher output current, faster switching) are backward compatible. The lower minimum supply voltage (5.5V versus 10V) expands application range. Verify that faster switching times do not introduce noise or EMI issues in the specific circuit topology.

Q: What is the significance of AEC-Q100 qualification on FAN7080MX-GF085? A: AEC-Q100 qualification indicates the part meets automotive industry reliability and quality standards. This qualification is relevant for automotive applications or systems requiring automotive-grade component reliability. Non-automotive applications do not require this qualification.

Q: Are all three parts RoHS compliant? A: IR2109STR is RoHS non-compliant. Both IR2109STRPBF and FAN7080MX-GF085 are ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components.