IR21064SPBF Equivalent & Substitute Parts

Part Overview

The IR21064SPBF is a high-side or low-side gate driver IC manufactured by Infineon Technologies, designed for independent channel operation with dual drivers supporting IGBT and N-Channel MOSFET gate control. The device operates with a supply voltage range of 10V to 20V and features a maximum bootstrap voltage of 600V, making it suitable for power conversion applications requiring independent gate drive control.

The IR21064SPBF is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this gate driver topology.

Substiute Parts

IR21064SPBF

Infineon TechnologiesIn Stock: 2249IR21064SPBF Datasheet

Current PartRFQ

IR2104STRPBF

Infineon TechnologiesIn Stock: 64021IR2104STRPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IR21064SPBF is evaluated based on the following critical parameters that define functional compatibility:

Supply Voltage Range: Both the main part and substitute must operate within 10V to 20V supply voltage to ensure proper gate drive operation in the target application.

Logic Voltage Levels (VIL, VIH): Input logic thresholds must be compatible to ensure correct signal interpretation from control circuitry.

Peak Output Current (Source and Sink): The substitute must meet or exceed the source and sink current specifications to deliver adequate gate charge within required timing windows.

Bootstrap Voltage Rating: Maximum high-side voltage capability must be maintained at 600V to support floating gate drive topologies.

Input Type: Non-inverting input configuration must be preserved to maintain signal polarity consistency with existing control logic.

Operating Temperature Range: The substitute must support the full -40°C to 150°C junction temperature range for thermal compatibility.

Gate Type Support: Compatibility with IGBT and N-Channel MOSFET gate drive requirements must be maintained.

The IR2104STRPBF is identified as a manufacturer-recommended substitute. While the IR2104STRPBF operates in a half-bridge configuration (compared to the independent high-side or low-side configuration of the IR21064SPBF), it maintains electrical compatibility across all critical parameters including supply voltage, logic levels, output current capability, bootstrap voltage, and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The IR2104STRPBF is the manufacturer-recommended substitute for the obsolete IR21064SPBF. Selection of this substitute is supported by the following engineering factors:

Product Status: The IR2104STRPBF maintains active product status with Infineon Technologies, ensuring ongoing availability, manufacturing support, and technical documentation. The IR21064SPBF is obsolete, making the IR2104STRPBF the appropriate path for design continuity.

Electrical Compatibility: The substitute meets or exceeds all critical electrical parameters. Peak output current specifications (210mA source, 360mA sink) exceed the main part requirements (200mA source, 350mA sink). Supply voltage range, logic voltage thresholds, bootstrap voltage rating, and operating temperature range are fully compatible.

Compliance and Certifications: Both parts maintain ROHS3 compliance and EAR99 ECCN classification. The IR2104STRPBF features improved moisture sensitivity (MSL 2, 1 Year) compared to the main part (MSL 3, 168 Hours), providing enhanced reliability in storage and handling.

Timing Characteristics: The IR2104STRPBF exhibits faster rise time (100ns versus 150ns), which may improve switching performance in power conversion applications. Fall time remains equivalent at 50ns.

Package Consideration: The IR2104STRPBF uses an 8-SOIC package compared to the 14-SOIC package of the main part. PCB layout modification is required to accommodate the different pin count and package footprint.

Frequently Asked Questions (FAQ)

Q: Can the IR2104STRPBF directly replace the IR21064SPBF without circuit modifications?

A: The IR2104STRPBF is electrically compatible with the IR21064SPBF across all critical parameters. However, the package change from 14-SOIC to 8-SOIC requires PCB layout redesign. The driven configuration differs (half-bridge versus independent high-side or low-side), which may require evaluation of the specific application topology to confirm functional equivalence.

Q: What is the primary difference between the IR21064SPBF and IR2104STRPBF configurations?

A: The IR21064SPBF supports independent high-side or low-side gate drive operation, allowing flexible topology implementation. The IR2104STRPBF is optimized for half-bridge topologies where high-side and low-side switches operate in complementary fashion. Both devices provide dual independent drivers and maintain identical electrical specifications for supply voltage, logic levels, output current, and bootstrap voltage.

Q: Are there any thermal or reliability differences between these parts?

A: Both parts operate across the same junction temperature range (-40°C to 150°C). The IR2104STRPBF features improved moisture sensitivity (MSL 2 versus MSL 3), indicating better performance in humid storage and handling environments. This represents an enhancement over the main part.

Q: What PCB design considerations apply when switching from IR21064SPBF to IR2104STRPBF?

A: The package footprint change from 14-SOIC to 8-SOIC requires complete PCB layout redesign. Pin assignments differ between the two packages. Verify all signal routing, power distribution, and bootstrap capacitor connections against the IR2104STRPBF datasheet pinout. The reduced pin count (8 versus 14) simplifies the overall circuit but requires careful attention to pin function mapping.

Q: Does the faster rise time of the IR2104STRPBF (100ns versus 150ns) affect system performance?

A: The faster rise time of the IR2104STRPBF may improve switching speed and reduce switching losses in power conversion applications. This represents a performance enhancement. Evaluate the specific application to confirm that faster gate drive transitions are compatible with the power stage design and do not introduce EMI or stability concerns.

Q: What compliance certifications apply to both parts?

A: Both the IR21064SPBF and IR2104STRPBF are ROHS3 compliant and classified as EAR99 under export control regulations. Both are REACH unaffected. These certifications ensure compatibility with environmental and regulatory requirements for industrial and commercial applications.