Texas Instruments TPS2592ALDRCT

Overview

TPS2592ALDRCT from Texas Instruments is a 12-V eFuse IC with integrated 28-mΩ pass MOSFET, fixed 15-V overvoltage clamp, latched fault response, and reverse current blocking support via BFET control. It operates from 4.5 V to 13.8 V input, delivers up to 3.7 A adjustable current limit (±15% accuracy), and is used in server AUX supplies and SSD drives for robust short-circuit and inrush protection.

For engineers reviewing the TPS2592ALDRCT datasheet, TPS2592ALDRCT pinout, TPS2592ALDRCT application, or TPS2592ALDRCT equivalent, key selection considerations include its latched thermal/overcurrent fault behavior, programmable dV/dT ramp control, BFET-driven back-to-back FET support, and UL 2367 recognition for safety-critical power distribution.

Technical Context

The TPS2592ALDRCT implements a fully integrated eFuse architecture with internal charge pump gate drive, fast-trip comparator (3 µs delay), and dedicated BFET driver enabling external reverse-blocking NFET control. Its UVLO threshold is fixed at 4.3 V (±5.4% hysteresis) and overvoltage clamp is fixed at 15 V without external components.

Unlike the auto-retry TPS2592AA, the TPS2592ALDRCT enters latched shutdown on overcurrent or thermal fault - requiring EN/UVLO toggle or power cycle to reset. Its dV/dT pin controls output slew rate via external capacitor (1–1000 nF), and ILIM pin sets current limit with ±15% accuracy using resistor values from 10 kΩ to 100 kΩ.

Key Specifications

Pinout & Package

TPS2592ALDRCT is housed in a thermally enhanced 10-pin VSON (DRC) package, 3.00 mm × 3.00 mm body size with exposed PowerPAD™ for low-θ_JA (45.9°C/W) and efficient heat dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar eFuse applications.

Compared with TPS2592ALDRCT, the TPS2592AADRCT offers identical protection features but auto-retries after faults - making it suitable for less critical loads - while the TPS25942ARVCR adds telemetry and wider voltage range at the cost of larger footprint and no pin compatibility.

Availability

TPS2592ALDRCT is available at Aetrix Electronics and suitable for server AUX supplies, SSD drives, and fan control circuits requiring stable component supply and long-term industrial availability.

Supply support for TPS2592ALDRCT 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 leader delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, efficiency, and system integration.

The TPS2592xx family was designed specifically for high-density, high-reliability power distribution in servers, storage, and industrial equipment - integrating protection, control, and safety certification into minimal footprint.

FAQ

What is the fault response behavior of the TPS2592ALDRCT?

The TPS2592ALDRCT uses a latched fault response: upon overcurrent, overvoltage, or thermal shutdown, the internal MOSFET turns off and remains off until the EN/UVLO pin is toggled (pulled low then high) or power is cycled. This prevents uncontrolled restart attempts during persistent faults, enhancing system safety in mission-critical 12-V rails like server AUX supplies. The TPS2592ALDRCT does not auto-retry.

How do I set the current limit for the TPS2592ALDRCT?

The TPS2592ALDRCT current limit is set using a single resistor (R_ILIM) from the ILIM pin to GND. For example, 45.3 kΩ yields ~2.1 A, 80.6 kΩ yields ~3.4 A, and 100 kΩ yields ~3.7 A - all with ±15% accuracy across temperature and voltage. The TPS2592ALDRCT datasheet provides the exact equation: I_LIMIT = 95.3 µA × R_ILIM. No calibration or trimming is required.

Does the TPS2592ALDRCT support reverse current blocking?

Yes, the TPS2592ALDRCT supports reverse current blocking via its BFET pin, which drives the gate of an external NFET placed back-to-back with the internal pass FET. When the TPS2592ALDRCT detects reverse voltage or input droop, it pulls the BFET pin low to turn off the external FET, preventing holdup capacitance from discharging backward into the input bus - a critical feature for SSDs and hot-swap applications.

What is the purpose of the dV/dT pin on the TPS2592ALDRCT?

The dV/dT pin on the TPS2592ALDRCT controls the output voltage ramp rate during turn-on. By connecting a capacitor (1–1000 nF) from dV/dT to GND, designers set the slew rate of V_OUT, achieving ramp times from 0.7 ms (1 nF) to 13 ms (1000 nF). This prevents inrush current spikes in capacitive loads like SSDs and fans, and the TPS2592ALDRCT's internal 220 nA charging current ensures predictable timing without external biasing.

Is the TPS2592ALDRCT certified for safety standards?

Yes, the TPS2592ALDRCT is UL 2367 Recognized (File No. 169910) and meets Safe During Single Point Failure requirements per UL 60950. These certifications validate its robustness in safety-critical power distribution - particularly important for server, storage, and industrial equipment where fault containment is mandatory. The TPS2592ALDRCT also includes built-in thermal shutdown and overvoltage clamping to meet system-level safety goals.