TDA21102 Equivalent & Substitute Parts

Part Overview

The TDA21102 is a half-bridge driver IC manufactured by Infineon Technologies, designed for power management applications in DC-DC converters. This device features integrated bootstrap circuitry, shoot-through protection, and UVLO (Under-Voltage Lock-Out) fault protection for driving power MOSFETs in half-bridge configurations.

The TDA21102 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support legacy system maintenance where this component is specified in active applications.

Substiute Parts

TDA21102

Infineon TechnologiesIn Stock: 1565TDA21102 Datasheet

Current PartRFQ

ISL6614ACBZ

Renesas Electronics CorporationIn Stock: 1876ISL6614ACBZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TDA21102 is determined by the following critical parameters:

Electrical Compatibility:

• Half-bridge driver topology with dual-channel output configuration
• Supply voltage range: 10.8V ~ 13.2V
• Peak output current capability: minimum 4A
• Bootstrap circuit for high-side gate drive
• Fault protection: shoot-through and UVLO functions

Mechanical Compatibility:

• Package type: 14-SOIC (0.154", 3.90mm Width)
• Surface mount technology
• Pin-compatible footprint

Environmental & Compliance:

• Operating temperature range: -25°C ~ 150°C minimum
• RoHS compliance status
• Moisture sensitivity level

The ISL6614ACBZ from Renesas Electronics Corporation qualifies as a substitute based on matching half-bridge driver topology, identical package format, overlapping supply voltage specifications, and compatible output current ratings within the operational envelope of the TDA21102.

Parameter Comparison

Engineering Selection Recommendations

ISL6614ACBZ as Substitute:

The ISL6614ACBZ is functionally equivalent for half-bridge gate driver applications within the specified supply voltage range. Both devices are classified as obsolete, indicating limited future availability.

Key Considerations:

1. Output Current Rating: The ISL6614ACBZ specifies lower peak output current (1.25A source, 2A sink) compared to the TDA21102 (4A). Applications requiring the full 4A output current capability of the TDA21102 must verify that the ISL6614ACBZ current ratings are sufficient for the target MOSFET gate charge and switching frequency.

2. Operating Temperature Range: The ISL6614ACBZ operates from 0°C to 125°C, which is narrower than the TDA21102 range (-25°C to 150°C). Designs requiring extended temperature operation below 0°C or above 125°C are not suitable for this substitute.

3. RoHS Compliance: The ISL6614ACBZ is ROHS3 compliant, whereas the TDA21102 is RoHS non-compliant. This difference may be relevant for new designs or regulatory requirements, though both parts are obsolete.

4. Package Compatibility: Both devices use identical 14-SOIC packaging, enabling direct PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the ISL6614ACBZ directly replace the TDA21102 in existing designs?

A: Pin-compatible replacement is possible due to identical 14-SOIC packaging. However, verify that the lower peak output current (1.25A/2A vs. 4A) and narrower operating temperature range (0°C to 125°C vs. -25°C to 150°C) meet your application requirements before implementation.

Q: What is the primary reason for substitution?

A: Both the TDA21102 and ISL6614ACBZ are obsolete products. Substitution is necessary to secure component availability for ongoing production or maintenance of legacy systems.

Q: Are there any pinout differences between these devices?

A: Both devices use the 14-SOIC package format with identical physical dimensions (0.154", 3.90mm width). Pinout compatibility must be verified against the respective device datasheets to confirm signal assignment alignment.

Q: What supply voltage range is common to both devices?

A: Both the TDA21102 and ISL6614ACBZ operate within the 10.8V to 13.2V supply voltage range, ensuring electrical compatibility in this specification window.

Q: Does the ISL6614ACBZ include bootstrap circuit functionality?

A: Yes, the ISL6614ACBZ includes bootstrap circuit functionality with a maximum bootstrap voltage rating of 36V, matching the high-side gate drive requirements of the TDA21102.

Q: What is the moisture sensitivity level difference?

A: The TDA21102 has MSL 1 (unlimited moisture exposure), while the ISL6614ACBZ has MSL 3 (168 hours). This affects storage and handling requirements; the ISL6614ACBZ requires more controlled moisture conditions during storage and assembly.