TPS2815D Low-Side Gate Driver IC Equivalent & Substitute Parts

Part Overview

The TPS2815D is a low-side gate driver IC manufactured by Texas Instruments, designed for driving N-Channel MOSFETs in power management applications. This device operates with an inverting input configuration and delivers 2A peak output current (source and sink). The TPS2815D is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently using this component.

Substiute Parts

TPS2815D

Texas InstrumentsIn Stock: 1954TPS2815D Datasheet

Current PartRFQ

UCC27424DR

Texas InstrumentsIn Stock: 130417UCC27424DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPS2815D is determined by the following critical parameters:

Package Compatibility: Both the main part and substitute must use the 8-SOIC surface mount package to ensure PCB layout compatibility without redesign.

Driven Configuration: The substitute must maintain low-side gate driver functionality to preserve circuit topology.

Number of Drivers: The substitute must provide 2 independent driver channels to match the original design.

Supply Voltage Range: The substitute supply voltage range must encompass or exceed the 4V ~ 14V requirement of the TPS2815D.

Peak Output Current: The substitute must deliver sufficient peak output current (source and sink) to drive the intended MOSFET gates. The TPS2815D specifies 2A; substitutes with equal or higher current capability are acceptable.

Operating Temperature Range: The substitute must support the -40°C ~ 125°C operating range.

Compliance Standards: Both parts must maintain ROHS3 compliance and equivalent regulatory status.

The UCC27424DR qualifies as a substitute based on these parameters, though design-level verification is required due to differences in input logic type and supported gate types.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (Minimal Design Change):

The UCC27424DR is electrically compatible with the TPS2815D in terms of package, supply voltage range, operating temperature, and output current capability. However, the UCC27424DR uses non-inverting logic, whereas the TPS2815D uses inverting logic. This difference requires modification to the input signal conditioning circuit or logic inversion at the driver input.

Product Status Consideration:

The TPS2815D is designated Last Time Buy, indicating limited future availability. The UCC27424DR is Active status, ensuring long-term supply continuity and ongoing manufacturer support.

Compliance and Regulatory:

Both parts maintain ROHS3 compliance, REACH Unaffected status, and identical ECCN and HTSUS classifications, ensuring regulatory equivalence for procurement and deployment.

Performance Enhancement:

The UCC27424DR provides 4A peak output current compared to the TPS2815D's 2A, offering improved gate drive capability for applications requiring faster MOSFET switching or driving multiple gates in parallel.

Frequently Asked Questions (FAQ)

Q: Can the UCC27424DR be used as a direct pin-for-pin replacement for the TPS2815D?

A: The UCC27424DR shares the same 8-SOIC package and pinout compatibility. However, the input logic is non-inverting (UCC27424DR) versus inverting (TPS2815D). Direct substitution without circuit modification will invert the gate drive signal, potentially causing incorrect MOSFET switching behavior. Input signal conditioning or logic inversion must be implemented.

Q: What are the key electrical differences between these parts?

A: The primary differences are input logic type (inverting vs. non-inverting), peak output current (2A vs. 4A), and supported gate types (N-Channel only vs. N-Channel and P-Channel). The UCC27424DR's higher output current and broader gate type support make it suitable for more demanding applications.

Q: Is the UCC27424DR suitable for my existing PCB layout?

A: Yes, the UCC27424DR uses the identical 8-SOIC package footprint as the TPS2815D. No PCB layout modifications are required for physical placement and soldering.

Q: What supply voltage range should I verify for the UCC27424DR?

A: The UCC27424DR operates from 4V to 15V, which encompasses the TPS2815D's 4V to 14V range. Verify that your power supply design does not exceed 15V to ensure safe operation.

Q: Are there any compliance or regulatory concerns with substitution?

A: Both parts maintain identical ROHS3 compliance, REACH Unaffected status, and regulatory classifications (ECCN: EAR99, HTSUS: 8542.39.0001). No additional compliance documentation is required for substitution.

Q: Why is the TPS2815D listed as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued this product line. Existing inventory is available for final orders, but no future production is planned. Transitioning to the UCC27424DR ensures long-term design sustainability.