IRS2128STRPBF Equivalent & Substitute Parts

Part Overview

The IRS2128STRPBF is a high-side gate driver IC manufactured by Infineon Technologies, designed for driving IGBT and N-Channel MOSFET devices in power management applications. This component operates with a supply voltage range of 12V to 20V and features inverting input logic with a single-channel configuration in an 8-SOIC surface mount package.

The IRS2128STRPBF is classified as obsolete. Identifying suitable substitute components is necessary to maintain design continuity and ensure availability for new production runs and system updates.

Substiute Parts

IRS2128STRPBF

Infineon TechnologiesIn Stock: 1193IRS2128STRPBF Datasheet

Current PartRFQ

FAN7081MX-GF085

onsemiIn Stock: 3979FAN7081MX-GF085 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRS2128STRPBF is determined by strict alignment of the following critical parameters:

• Package compatibility: 8-SOIC form factor with identical 0.154" (3.90mm) width
• Functional configuration: High-side, single-channel, inverting input gate driver
• Gate type support: IGBT and N-Channel MOSFET compatibility
• Bootstrap voltage rating: 600V maximum
• Operating temperature range: -40°C to 150°C
• Surface mount technology

The FAN7081MX-GF085 from onsemi meets these core substitution criteria. Both devices share identical package specifications, functional topology, and maximum bootstrap voltage ratings. The substitute part maintains compatibility with the same gate types and operating temperature envelope.

Parameter Comparison

Engineering Selection Recommendations

The FAN7081MX-GF085 is the qualified substitute for the obsolete IRS2128STRPBF. Both devices maintain identical package geometry and functional topology, ensuring direct replacement capability in existing PCB layouts.

The substitute part offers the advantage of active product status, ensuring long-term availability and supply chain continuity. The FAN7081MX-GF085 carries AEC-Q100 automotive qualification and ROHS3 compliance, providing additional quality assurance for applications requiring these certifications.

The substitute exhibits faster switching characteristics (15ns/10ns rise/fall time versus 80ns/40ns), which may improve efficiency in high-frequency switching applications. Peak output current specifications are slightly lower (250mA source, 500mA sink versus 290mA source, 600mA sink), requiring verification that gate drive requirements remain within acceptable limits for the target IGBT or MOSFET devices.

The substitute part supports a minimum supply voltage of 10V compared to 12V for the original part, providing expanded operational flexibility in lower-voltage supply scenarios.

Frequently Asked Questions (FAQ)

Q: Can the FAN7081MX-GF085 be used as a direct replacement for the IRS2128STRPBF?

A: Yes. Both devices share identical 8-SOIC package dimensions, high-side single-channel inverting gate driver topology, 600V bootstrap voltage rating, and -40°C to 150°C operating temperature range. PCB layout compatibility is maintained without modification.

Q: What are the key differences between these two parts?

A: The primary differences are supply voltage range (10V–20V for FAN7081MX-GF085 versus 12V–20V for IRS2128STRPBF), peak output current ratings (250mA/500mA versus 290mA/600mA), and switching speed (15ns/10ns versus 80ns/40ns). The substitute part is active and carries AEC-Q100 qualification, while the original is obsolete.

Q: Are there any circuit design considerations when switching to the FAN7081MX-GF085?

A: Verify that gate drive current requirements for your IGBT or MOSFET devices remain within the substitute part's peak output current specifications. The faster switching characteristics of the FAN7081MX-GF085 may reduce switching losses but require confirmation that EMI performance remains acceptable in your application.

Q: Does the FAN7081MX-GF085 require different PCB layout or decoupling?

A: No. The identical 8-SOIC package footprint and pin configuration eliminate layout changes. Existing decoupling and bootstrap capacitor designs remain valid.

Q: What compliance certifications does the substitute part carry?

A: The FAN7081MX-GF085 is AEC-Q100 qualified and ROHS3 compliant. The original IRS2128STRPBF compliance status is not specified in the available data.