IR21094 Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The IR21094 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 operates with a supply voltage range of 10V to 20V and provides dual synchronized gate drive channels with independent high-side and low-side outputs.

The IR21094 is classified as obsolete, which necessitates identification of functionally equivalent substitute components for ongoing system support and new design implementations. The substitute part IR21094PBF, manufactured by International Rectifier (now part of Infineon), maintains identical electrical and mechanical specifications while carrying an active product status.

Substiute Parts

IR21094

Infineon TechnologiesIn Stock: 2289IR21094 Datasheet

Current PartRFQ

IR21094PBF

International RectifierIn Stock: 1524IR21094PBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IR21094 is determined by strict equivalence across the following critical parameters:

• Driven Configuration: Half-Bridge topology
• Number of Drivers: Dual channel (2)
• Gate Type Compatibility: IGBT and N-Channel MOSFET support
• Supply Voltage Range: 10V ~ 20V
• Logic Voltage Levels: VIL 0.8V, VIH 2.9V
• Peak Output Current: Source 200mA, Sink 350mA
• Bootstrap Voltage Rating: 600V maximum
• Package Form Factor: 14-DIP through-hole
• Input Configuration: Non-Inverting

The IR21094PBF maintains complete electrical and mechanical equivalence to the base IR21094, differing only in product status (active vs. obsolete) and packaging designation (bulk vs. standard).

Parameter Comparison

Engineering Selection Recommendations

The IR21094PBF is a direct functional equivalent to the IR21094 and is suitable for substitution in all applications where the base part was originally specified. The primary advantage of IR21094PBF is its active product status, ensuring continued availability and manufacturing support from International Rectifier.

Both parts carry identical ECCN (EAR99) and HTSUS classifications, indicating equivalent export control and tariff treatment. The IR21094PBF's bulk packaging designation does not affect electrical performance or pin compatibility.

For new designs or system refreshes, IR21094PBF is the recommended selection due to its active lifecycle status and guaranteed supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can IR21094PBF be used as a direct replacement for IR21094 in existing designs?

A: Yes. The IR21094PBF is electrically and mechanically identical to the IR21094. Pin configuration, electrical characteristics, and package dimensions are equivalent. No circuit modifications are required.

Q: What is the difference between IR21094 and IR21094PBF?

A: The primary differences are manufacturer designation (International Rectifier vs. Infineon Technologies) and product lifecycle status (active vs. obsolete). Electrical specifications and package form factor are identical.

Q: Are there any compatibility concerns with the 14-DIP through-hole package?

A: No. Both parts use the standard 14-DIP (0.300", 7.62mm) through-hole package. PCB footprints and socket compatibility are identical.

Q: What supply voltage range does this gate driver support?

A: The IR21094 and IR21094PBF operate with a supply voltage range of 10V to 20V. Ensure your power supply design maintains this specification.

Q: What is the maximum bootstrap voltage rating?

A: The maximum high-side bootstrap voltage is 600V. This rating applies to both the main part and substitute.

Q: Can this gate driver support both IGBT and N-Channel MOSFET configurations?

A: Yes. The IR21094 and IR21094PBF are designed to drive both IGBT and N-Channel MOSFET gate terminals with identical performance characteristics.

Q: What are the peak output current specifications?

A: Source current: 200mA; Sink current: 350mA. These specifications are identical for both IR21094 and IR21094PBF.