IR21834 Gate Driver IC - Equivalent & Substitute Parts

Part Overview

The IR21834 is a half-bridge gate driver IC manufactured by Infineon Technologies, designed to drive IGBT and N-Channel MOSFET configurations in power management applications. This device features independent dual-channel architecture with inverting and non-inverting input types, supporting supply voltages from 10V to 20V with peak output currents of 1.9A (source) and 2.3A (sink).

The IR21834 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this gate driver topology.

Substiute Parts

IR21834

Infineon TechnologiesIn Stock: 2066IR21834 Datasheet

Current PartRFQ

IR21834PBF

International RectifierIn Stock: 1914IR21834PBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IR21834 is determined by strict alignment with the following critical parameters:

• Half-bridge driven configuration with dual independent channels
• Gate drive capability for IGBT and N-Channel MOSFET devices
• Supply voltage range: 10V ~ 20V
• Peak output current specifications: 1.9A source, 2.3A sink minimum
• Logic input voltage thresholds: VIL 0.8V, VIH 2.7V
• Bootstrap voltage rating: 600V maximum
• 14-DIP through-hole package format
• Operating temperature range: -40°C ~ 150°C

The IR21834PBF qualifies as a direct substitute based on identical electrical specifications and package configuration, with the primary distinction being packaging format (bulk versus tape/reel) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The IR21834PBF serves as the direct functional equivalent to the IR21834. Both devices share identical electrical specifications, gate drive architecture, and 14-DIP package configuration. The primary distinction is product lifecycle status: the IR21834 is obsolete, while the IR21834PBF maintains active production status.

For new designs or ongoing production requiring gate driver functionality in half-bridge topologies, the IR21834PBF is the appropriate selection. Both parts maintain RoHS non-compliant status and identical compliance certifications (ECCN: EAR99, HTSUS: 8542.39.0001).

Frequently Asked Questions (FAQ)

Q: Can IR21834PBF directly replace IR21834 in existing designs?

A: Yes. The IR21834PBF is electrically and mechanically identical to the IR21834. Both devices feature the same 14-DIP package, supply voltage range (10V ~ 20V), output current ratings (1.9A source, 2.3A sink), and gate drive specifications. Direct PCB substitution is supported without design modification.

Q: What is the difference between IR21834 and IR21834PBF?

A: The primary difference is packaging format and product status. IR21834PBF is supplied in bulk packaging, while the original IR21834 designation may reference tape/reel or alternative packaging. IR21834PBF maintains active production status, whereas IR21834 is classified as obsolete.

Q: Are there any compliance or certification differences?

A: Both parts share identical compliance designations: ECCN EAR99 and HTSUS 8542.39.0001. Both are RoHS non-compliant and carry MSL rating of 1 (Unlimited). No compliance differentiation exists between the two parts.

Q: What applications are suitable for this gate driver?

A: The IR21834 / IR21834PBF is designed for half-bridge gate drive applications including inverters, motor drives, and power conversion circuits utilizing IGBT or N-Channel MOSFET switching elements. The 600V bootstrap voltage rating supports high-side gate drive requirements in these topologies.

Q: Is the 14-DIP through-hole package still available?

A: Yes. The IR21834PBF maintains availability in the standard 14-DIP (0.300", 7.62mm) through-hole package format, ensuring compatibility with existing PCB designs and manufacturing processes.