IRS2104SPBF Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The IRS2104SPBF is a half-bridge gate driver IC manufactured by Infineon Technologies, designed for driving IGBT and N-Channel MOSFET configurations in power management applications. This device features non-inverting input logic, dual synchronous channels, and a maximum bootstrap voltage rating of 600V. The product is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. Substitute parts must maintain electrical compatibility across supply voltage, output current, timing characteristics, and thermal operating ranges while accommodating packaging and qualification requirements.

Substiute Parts

IRS2104SPBF

Infineon TechnologiesIn Stock: 1384IRS2104SPBF Datasheet

Current PartRFQ

FAN7080MX-GF085

onsemiIn Stock: 5902FAN7080MX-GF085 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IRS2104SPBF is determined by strict alignment with the following critical parameters:

Functional Requirements:

• Half-bridge driven configuration with dual synchronous channels
• Non-inverting input logic
• IGBT and N-Channel MOSFET gate drive capability
• 600V maximum bootstrap voltage rating

Electrical Compatibility:

• Supply voltage range must encompass or overlap the 10V ~ 20V requirement
• Peak output current (source and sink) must meet or exceed 290mA and 600mA respectively
• Logic input thresholds (VIL, VIH) must be compatible with 0.8V and 2.5V levels
• Rise and fall time characteristics must support system timing requirements

Physical & Environmental:

• 8-SOIC package form factor (0.154", 3.90mm width)
• Operating temperature range of -40°C ~ 150°C
• RoHS3 compliance

Compliance & Availability:

• Active product status preferred for long-term supply assurance
• Relevant automotive or industrial certifications enhance suitability

Parameter Comparison

Engineering Selection Recommendations

The FAN7080MX-GF085 qualifies as a direct substitute for the obsolete IRS2104SPBF based on functional and electrical parameter alignment. Both devices share identical half-bridge topology, dual synchronous channel configuration, non-inverting input logic, and 600V bootstrap voltage capability. The FAN7080MX-GF085 demonstrates superior performance characteristics with faster rise and fall times (40ns/25ns versus 70ns/35ns) and marginally higher peak source current (300mA versus 290mA), while maintaining full compatibility with the IRS2104SPBF supply voltage and logic threshold requirements.

The FAN7080MX-GF085 offers significant advantages for new implementations and legacy system support:

Product Status: Active manufacturing status ensures long-term availability and supply chain continuity, eliminating obsolescence risk associated with the IRS2104SPBF.

Compliance & Certification: AEC-Q100 automotive qualification provides enhanced reliability documentation suitable for mission-critical applications, though this certification is not required for direct substitution.

Electrical Performance: Improved switching speed characteristics (40ns rise time, 25ns fall time) enable more efficient power conversion and reduced switching losses compared to the original device.

Package Compatibility: Identical 8-SOIC form factor and pinout ensure direct PCB-level compatibility without layout modifications.

Supply Voltage Flexibility: Extended lower supply voltage limit (5.5V minimum versus 10V) provides operational flexibility in systems with variable supply conditions.

Selection of the FAN7080MX-GF085 is appropriate for both direct replacement in existing designs and new development where half-bridge gate drive functionality is required.

Frequently Asked Questions (FAQ)

Q: Can the FAN7080MX-GF085 directly replace the IRS2104SPBF without PCB modifications?

A: Yes. Both devices use identical 8-SOIC packaging with matching pinout and electrical interface. No PCB layout changes are required for direct substitution.

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

A: The FAN7080MX-GF085 features faster switching times (40ns/25ns rise/fall versus 70ns/35ns) and slightly higher source current capability (300mA versus 290mA). The FAN7080MX-GF085 also supports lower minimum supply voltage (5.5V versus 10V). All other functional parameters remain equivalent.

Q: Is the FAN7080MX-GF085 suitable for automotive applications?

A: The FAN7080MX-GF085 carries AEC-Q100 automotive qualification, making it suitable for automotive-grade applications. The original IRS2104SPBF does not specify automotive qualification.

Q: What is the impact of faster rise and fall times on system design?

A: Faster switching transitions reduce switching losses and electromagnetic interference (EMI) in power conversion circuits. Systems designed for the IRS2104SPBF will operate with improved efficiency using the FAN7080MX-GF085, though no design changes are necessary for functional compatibility.

Q: Are there packaging format differences between these parts?

A: The IRS2104SPBF is supplied in tube packaging, while the FAN7080MX-GF085 is supplied in tape and reel format. This affects handling and automated assembly processes but does not impact electrical performance or PCB-level compatibility.

Q: Can the FAN7080MX-GF085 operate at the minimum 10V supply voltage specified for the IRS2104SPBF?

A: Yes. The FAN7080MX-GF085 supply voltage range (5.5V ~ 20V) fully encompasses the IRS2104SPBF requirement (10V ~ 20V). Operation at 10V is fully supported.

Q: What is the significance of the extended lower supply voltage limit on the FAN7080MX-GF085?

A: The 5.5V minimum rating provides operational flexibility in systems with lower supply voltages or variable supply conditions. This does not affect compatibility with systems designed for 10V ~ 20V operation.