IR2128 Gate Driver IC - Equivalent & Substitute Parts

Part Overview

The IR2128 is a high-side or low-side gate driver IC designed for IGBT and N-channel MOSFET switching applications. This component operates with a supply voltage range of 12V to 20V and delivers peak output currents of 250mA (source) and 500mA (sink), making it suitable for power conversion and motor control circuits.

The IR2128 carries an obsolete product status, which necessitates identifying functionally equivalent alternatives for new designs and ongoing production requirements. The IR2128PBF provides a direct substitute with identical electrical and mechanical specifications while maintaining active product availability.

Substiute Parts

IR2128

Infineon TechnologiesIn Stock: 837IR2128 Datasheet

Current PartRFQ

IR2128PBF

Infineon TechnologiesIn Stock: 93392IR2128PBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IR2128 is determined by strict equivalence across the following critical parameters:

• Driven Configuration: High-Side or Low-Side capability
• Channel Type and Driver Count: Single channel, single driver
• Gate Type Compatibility: IGBT and N-channel MOSFET support
• Supply Voltage Range: 12V ~ 20V operation
• Output Current Specifications: 250mA source, 500mA sink
• Input Logic: Inverting configuration
• Bootstrap Voltage Rating: 600V maximum
• Switching Performance: 80ns rise time, 40ns fall time
• Package Form Factor: 8-DIP through-hole mounting
• Temperature Range: -40°C to 150°C junction temperature

The IR2128PBF meets all these criteria and serves as a direct functional equivalent. The primary distinction between the two parts is product lifecycle status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The IR2128PBF is the appropriate selection for new designs and production applications. This part maintains identical electrical performance and mechanical compatibility with the obsolete IR2128 while offering the following advantages:

• Active Product Status: Ensures long-term availability and supply chain continuity
• ROHS3 Compliance: Meets current environmental and regulatory requirements for electronic components
• Equivalent Specifications: All functional parameters remain unchanged, enabling direct substitution without circuit redesign

For existing designs currently using the IR2128, transition to the IR2128PBF requires no modifications to PCB layout, schematic topology, or firmware logic. The through-hole 8-DIP package footprint is identical, and all electrical characteristics match precisely.

Frequently Asked Questions (FAQ)

Q: Can IR2128PBF replace IR2128 in existing circuits?

A: Yes. The IR2128PBF is a direct substitute with identical electrical specifications, output current ratings, switching times, and package form factor. No circuit modifications are required.

Q: What is the primary reason to transition from IR2128 to IR2128PBF?

A: The IR2128 is obsolete, while the IR2128PBF maintains active product status. Additionally, IR2128PBF is ROHS3 compliant, meeting current regulatory standards.

Q: Are the package dimensions identical?

A: Yes. Both parts use 8-DIP (0.300", 7.62mm) through-hole packaging with identical pin configurations and PCB footprints.

Q: Do the output current specifications differ?

A: No. Both parts deliver 250mA peak source current and 500mA peak sink current with identical rise and fall times of 80ns and 40ns respectively.

Q: Is the supply voltage range the same?

A: Yes. Both parts operate across the 12V to 20V supply voltage range with identical logic voltage thresholds of 0.8V (VIL) and 3V (VIH).

Q: What is the maximum bootstrap voltage for both parts?

A: Both the IR2128 and IR2128PBF support a maximum high-side bootstrap voltage of 600V, enabling high-voltage switching applications.

Q: Are there any temperature rating differences?

A: No. Both parts operate across the identical temperature range of -40°C to 150°C junction temperature.