Texas Instruments TPS92624Q1EVM

Overview

TPS92624Q1EVM from Texas Instruments is an evaluation module designed to validate the TPS92624-Q1 four-channel automotive high-side linear LED driver, supporting 130 mA per channel, 9–20 V input, and 3-LED-series strings with integrated open/short diagnostics for rear lamps, CHMSL, and interior lighting.

For engineers reviewing the TPS92624Q1EVM datasheet, TPS92624Q1EVM test setup, TPS92624Q1EVM application, or TPS92624Q1EVM jumper configuration, this EVM provides validated thermal sharing, fault masking during dropout, and configurable PWM dimming for automotive LED system prototyping and compliance verification.

Technical Context

The TPS92624Q1EVM implements a hardware-configurable test platform for the TPS92624-Q1 IC, featuring dedicated jumpers (J1–J13) for open/short fault simulation per channel and selectable fault behavior (one-fail-others-on vs. one-fail-all-off). It supports 3s1p LED strings with 6.45 V typical forward voltage.

Input conditioning includes 1 µF/50 V ceramic bulk capacitors (C1, C2), 0.1 µF decoupling (C3), and 0.01 µF local bypassing (C4–C7); current sensing uses 1.15 Ω resistors (R3–R5, R7); thermal sharing is enabled via 86.4 Ω external resistor (Rres).

Key Specifications

Availability

TPS92624Q1EVM is available at Aetrix Electronics and suitable for automotive lighting validation, LED driver qualification, and AEC-Q100-compliant system integration requiring stable component supply and traceable evaluation hardware.

Supply support for TPS92624Q1EVM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in automotive, industrial, and power management technologies.

The TPS92624-Q1 product line targets automotive exterior and interior LED lighting systems, delivering high-side linear regulation with integrated diagnostics, thermal robustness, and functional safety support for ASIL-B–capable designs.

FAQ

What is the primary function of the TPS92624Q1EVM?

The TPS92624Q1EVM is an evaluation module used to characterize and validate the TPS92624-Q1 four-channel high-side linear LED driver IC. It enables functional testing of open/short detection, thermal sharing, PWM dimming, and fault reporting in automotive lighting applications. Engineers use the TPS92624Q1EVM to verify real-world performance before integrating the TPS92624-Q1 into production PCBs.

How do I configure the TPS92624Q1EVM for LED open-circuit testing?

Open-circuit testing on the TPS92624Q1EVM is performed using jumpers J1, J3, J5, and J11 - removing the shunt from any of these disables the corresponding LED string (LED1–LED4) and triggers the open-fault diagnostic. The FAULT pin (TP2) asserts low, and status can be monitored while maintaining operation of unaffected channels when J13 is installed.

Can the TPS92624Q1EVM support different LED forward voltages?

Yes - the TPS92624Q1EVM supports LED strings with up to 7.8 V maximum forward voltage per 3-LED string, as verified in its schematic and layout. The board's 20 V max input and internal current regulation allow safe operation across the full range of automotive LED bins, including high-V_F red/amber variants used in rear lamps and CHMSL.

What role does the 86.4 Ω resistor play on the TPS92624Q1EVM?

The 86.4 Ω resistor (Rres) on the TPS92624Q1EVM enables thermal sharing between channels of the TPS92624-Q1 IC. When input voltage exceeds the sum of LED forward voltages plus headroom, this resistor allows coordinated thermal derating - preventing individual channel shutdown and improving overall power efficiency and reliability in high-temperature automotive environments.

Is the TPS92624Q1EVM compliant with automotive qualification standards?

Yes - the TPS92624Q1EVM incorporates AEC-Q200–qualified passive components (capacitors, resistors) and interfaces directly with the AEC-Q100–qualified TPS92624-Q1 IC. Its design follows TI's automotive evaluation guidelines, supporting functional safety analysis and validation for ASIL-B–relevant LED lighting subsystems per ISO 26262.