IXDI504D1T/R Low-Side Gate Driver IC Equivalent & Substitute Parts

Part Overview

The IXDI504D1T/R is a low-side gate driver IC manufactured by IXYS, designed for driving IGBT and MOSFET gates in power management applications. This component operates with a supply voltage range of 4.5V to 30V and features dual independent channels with inverting input configuration. The product is currently obsolete, making identification of functionally equivalent substitute parts essential for system redesign, legacy product support, and procurement continuity.

Substiute Parts

IXDI504D1T/R

IXYSIn Stock: 791IXDI504D1T/R Datasheet

Current PartRFQ

IR4426SPBF

Infineon TechnologiesIn Stock: 2605IR4426SPBF Datasheet

SimilarRFQ

IR4426STRPBF

Infineon TechnologiesIn Stock: 20720IR4426STRPBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the IXDI504D1T/R is determined by the following critical parameters:

Functional Requirements:

• Driven configuration: Low-side operation
• Number of drivers: 2 independent channels
• Input type: Inverting configuration
• Gate type compatibility: IGBT and MOSFET support

Electrical Compatibility:

• Supply voltage range must encompass or overlap with 4.5V ~ 30V
• Logic voltage thresholds (VIL, VIH) must be compatible with 0.8V, 3V
• Peak output current (source and sink) must meet or exceed 4A, 4A
• Rise and fall time specifications must support system timing requirements

Physical Constraints:

• Surface mount technology required
• Package footprint and pin configuration must be compatible with PCB layout

The substitute parts identified (IR4426SPBF and IR4426STRPBF) maintain the core functional architecture of dual-channel, low-side, inverting gate drivers. However, differences in supply voltage range, output current ratings, and switching speed characteristics require engineering evaluation for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

IR4426STRPBF (Recommended Primary Substitute)

The IR4426STRPBF is the preferred substitute for the IXDI504D1T/R based on active product status and long-term availability. This part maintains dual-channel, low-side, inverting gate driver functionality with compatible logic voltage thresholds. The supply voltage range of 6V ~ 20V is narrower than the original part but covers standard industrial and automotive power supply ranges. The part is RoHS3 compliant and carries REACH unaffected status, meeting modern regulatory requirements.

IR4426SPBF (Secondary Substitute)

The IR4426SPBF provides equivalent electrical functionality to IR4426STRPBF but carries obsolete product status. This part should be considered only when IR4426STRPBF availability is constrained and long-term supply is not critical.

Critical Substitution Considerations

Both IR4426 variants exhibit reduced peak output current (2.3A source, 3.3A sink) compared to the IXDI504D1T/R (4A, 4A). Applications requiring the full 4A output current capability must implement external drive circuitry or select alternative gate drivers with higher current ratings. The slower switching speed (15ns rise, 10ns fall versus 9ns, 8ns) may impact high-frequency switching applications. The package change from 6-VDFN to 8-SOIC requires PCB layout modification. The narrower supply voltage range (6V ~ 20V versus 4.5V ~ 30V) eliminates operation below 6V and above 20V.

Frequently Asked Questions (FAQ)

Q: Can IR4426STRPBF directly replace IXDI504D1T/R without circuit modification?

A: Direct pin-for-pin replacement is not possible due to package differences (6-VDFN versus 8-SOIC). PCB layout redesign is required. Electrical functionality is compatible for applications operating within the 6V ~ 20V supply range and not requiring peak output currents exceeding 2.3A source or 3.3A sink.

Q: What are the implications of reduced output current in the IR4426 substitutes?

A: The IR4426 series provides 2.3A source and 3.3A sink current versus 4A, 4A in the IXDI504D1T/R. For gate drive applications requiring higher current, external buffer stages or alternative gate driver ICs with higher current ratings must be implemented.

Q: How does the narrower supply voltage range affect system design?

A: The IR4426 operates from 6V ~ 20V, eliminating the IXDI504D1T/R capability to operate below 6V or above 20V. System power supplies must be verified to remain within this range under all operating conditions, including transient events and fault conditions.

Q: Are there thermal operating range differences?

A: The IXDI504D1T/R operates from -55°C to 150°C junction temperature, while IR4426 variants operate from -40°C to 150°C. Applications requiring operation below -40°C cannot use IR4426 substitutes.

Q: What is the impact of switching speed differences?

A: The IR4426 exhibits slower rise and fall times (15ns, 10ns) compared to IXDI504D1T/R (9ns, 8ns). High-frequency switching applications may experience increased switching losses and EMI. System performance must be validated at target switching frequencies.

Q: Is IR4426STRPBF preferred over IR4426SPBF?

A: Yes. IR4426STRPBF carries active product status and is available in higher quantities, ensuring long-term supply continuity. IR4426SPBF is obsolete and should be used only when IR4426STRPBF is unavailable.