IXDF502SIAT/R Low-Side Gate Driver IC Equivalent & Substitute Parts

Part Overview

The IXDF502SIAT/R is a low-side gate driver IC manufactured by IXYS, designed to drive IGBT and MOSFET devices in power management applications. This device features dual independent channels with inverting and non-inverting inputs, operating across a 4.5V to 30V supply range with 2A peak output current capability. The part is currently obsolete, making equivalent and substitute parts essential for ongoing system support and new design implementations. Substitute parts must maintain compatibility with the 8-SOIC package format and support the same gate drive functionality for IGBT and MOSFET applications.

Key Parameters

Parameter	IXDF502SIAT/R
Manufacturer	IXYS
Category	Power Management (PMIC)
Description	IC GATE DRVR LOW-SIDE 8SOIC
Driven Configuration	Low-Side
Number of Drivers	2
Gate Type	IGBT, N-Channel, P-Channel MOSFET
Voltage - Supply	4.5V ~ 30V
Logic Voltage - VIL, VIH	0.8V, 3V
Current - Peak Output (Source, Sink)	2A, 2A
Input Type	Inverting, Non-Inverting
Rise / Fall Time (Typ)	7.5ns, 6.5ns
Operating Temperature	-55°C ~ 150°C (TJ)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the IXDF502SIAT/R is determined by the following critical parameters:

Package Format: All substitutes must use 8-SOIC (0.154", 3.90mm Width) surface mount packaging
Driven Configuration: Low-side gate driver topology required
Channel Architecture: Dual independent channels with inverting and non-inverting input capability
Gate Type Compatibility: Support for N-Channel and P-Channel MOSFET operation (IGBT support is secondary)
Supply Voltage Range: Minimum 4.5V lower bound; upper range may vary by substitute
Peak Output Current: Minimum 1.2A source and sink capability
Logic Input Levels: VIL ≤ 0.8V and VIH ≥ 2.4V compatibility
Operating Temperature: Functional range must overlap with application requirements

Microchip Technology TC-series parts (TC1428, TC428) and Fairchild Semiconductor FAN3229CMX meet these core substitution criteria. All substitute parts maintain the same package footprint, dual-channel architecture, and low-side gate drive functionality.

Parameter Comparison

Parameter	IXDF502SIAT/R	FAN3229CMX	TC1428COA	TC1428COA713	TC428COA	TC428COA713	TC428EOA	TC428EOA713
Manufacturer	IXYS	Fairchild Semiconductor	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology
Driven Configuration	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side
Number of Drivers	2	2	2	2	2	2	2	2
Gate Type	IGBT, N-Channel, P-Channel MOSFET	N-Channel MOSFET	N-Channel, P-Channel MOSFET	N-Channel, P-Channel MOSFET	N-Channel, P-Channel MOSFET	N-Channel, P-Channel MOSFET	N-Channel, P-Channel MOSFET	N-Channel, P-Channel MOSFET
Voltage - Supply	4.5V ~ 30V	4.5V ~ 18V	4.5V ~ 16V	4.5V ~ 16V	4.5V ~ 18V	4.5V ~ 18V	4.5V ~ 18V	4.5V ~ 18V
Logic Voltage - VIL, VIH	0.8V, 3V	—	0.8V, 3V	0.8V, 3V	0.8V, 2.4V	0.8V, 2.4V	0.8V, 2.4V	0.8V, 2.4V
Current - Peak Output (Source, Sink)	2A, 2A	3A, 3A	1.2A, 1.2A	1.2A, 1.2A	1.5A, 1.5A	1.5A, 1.5A	1.5A, 1.5A	1.5A, 1.5A
Input Type	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting
Rise / Fall Time (Typ)	7.5ns, 6.5ns	12ns, 9ns	35ns, 25ns	35ns, 25ns	30ns, 30ns	30ns, 30ns	30ns, 30ns	30ns, 30ns
Operating Temperature	-55°C ~ 150°C (TJ)	-40°C ~ 125°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility)

TC428EOA and TC428EOA713 (Microchip Technology) provide the closest functional match to the IXDF502SIAT/R. Both parts support the extended operating temperature range of -40°C to 85°C, matching the original part's thermal requirements more closely than other TC-series alternatives. These parts are active products with ROHS3 compliance and maintain dual independent channels with inverting/non-inverting input architecture. The 1.5A peak output current is lower than the original 2A specification but remains adequate for most low-side gate drive applications.

Secondary Substitutes (Acceptable for Standard Applications)

TC428COA and TC428COA713 (Microchip Technology) operate within the 0°C to 70°C temperature range, suitable for commercial and industrial applications with standard thermal requirements. These parts maintain full functional compatibility with the original part's dual-channel architecture and logic input levels. Peak output current of 1.5A supports standard MOSFET and IGBT gate drive loads.

TC1428COA and TC1428COA713 (Microchip Technology) are functionally equivalent to the TC428 series but with reduced peak output current (1.2A). These parts are appropriate for applications with lower gate drive current requirements and operate within the 0°C to 70°C commercial temperature range.

Alternative Substitute (Higher Output Current)

FAN3229CMX (Fairchild Semiconductor) offers the highest peak output current at 3A, exceeding the original IXDF502SIAT/R specification. This part is suitable for applications requiring enhanced gate drive capability. However, the supply voltage range is limited to 4.5V to 18V, and logic input voltage specifications are not provided. This part is active and ROHS3 compliant.

All substitute parts maintain the 8-SOIC package footprint, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can TC428EOA713 directly replace IXDF502SIAT/R in existing designs?

A: Yes, TC428EOA713 is a direct functional replacement. Both parts use the 8-SOIC package, support dual independent channels with inverting and non-inverting inputs, and operate as low-side gate drivers for MOSFET applications. The main difference is peak output current (1.5A vs. 2A) and operating temperature range (-40°C to 85°C vs. -55°C to 150°C). For applications operating within -40°C to 85°C, this substitute is fully compatible.

Q: What is the difference between TC428COA and TC428EOA?

A: Both parts are functionally identical low-side gate drivers with the same electrical specifications (1.5A peak output, 4.5V to 18V supply, 30ns rise/fall time). The primary difference is operating temperature range: TC428COA operates 0°C to 70°C, while TC428EOA operates -40°C to 85°C. Select TC428EOA for extended low-temperature applications.

Q: Why do TC1428 parts have lower peak output current than TC428 parts?

A: TC1428 and TC428 are different product lines within Microchip's gate driver portfolio. TC1428 delivers 1.2A peak output current, while TC428 delivers 1.5A. Both are functionally compatible low-side gate drivers with identical package and channel architecture. Select based on application current requirements.

Q: Are the "713" suffix variants (tape & reel packaging) electrically identical to tube-packaged versions?

A: Yes. The "713" suffix indicates tape & reel packaging format, while non-suffixed part numbers indicate tube packaging. Electrical specifications, performance, and functionality are identical. The packaging difference affects only supply format and handling. Both are suitable for production use.

Q: What is the impact of reduced peak output current when substituting?

A: Peak output current determines gate drive capability and switching speed. The IXDF502SIAT/R provides 2A, while most Microchip substitutes provide 1.2A to 1.5A. For applications with low gate capacitance or moderate switching frequencies, reduced current is acceptable. For high-frequency switching or large gate capacitance loads, verify that the substitute's current rating is sufficient using the formula: I_peak = C_gate × dV/dt.

Q: Is FAN3229CMX suitable for high-current gate drive applications?

A: FAN3229CMX provides 3A peak output current, exceeding the original IXDF502SIAT/R specification. However, the supply voltage range is limited to 4.5V to 18V compared to the original 4.5V to 30V. Verify that your application's supply voltage does not exceed 18V before selecting this part.

Q: Do all substitute parts support IGBT gate driving?

A: The IXDF502SIAT/R explicitly supports IGBT, N-Channel, and P-Channel MOSFET gate types. Most Microchip substitutes (TC428, TC1428 series) support N-Channel and P-Channel MOSFET operation. FAN3229CMX supports N-Channel MOSFET only. For IGBT applications, verify gate type compatibility with the selected substitute or consult the device datasheet.

Q: What compliance certifications should I verify for new designs?

A: All active substitute parts listed are ROHS3 compliant and REACH unaffected. For new designs, confirm that the selected substitute meets your application's environmental and regulatory requirements. The original IXDF502SIAT/R is obsolete and no longer recommended for new designs; active substitutes ensure long-term supply availability and compliance support.

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