Texas Instruments TPS259241DRCR

Overview

TPS259241DRCR from Texas Instruments is a 12-V eFuse IC with integrated 28-mΩ pass MOSFET, fixed 15-V overvoltage clamp, adjustable 1–5-A current limit (±8% accuracy at 3.7 A), reverse current blocking support, and programmable dV/dT slew rate control-designed for robust power path protection in adapter-powered SSDs, PCIe cards, and server auxiliary supplies.

For engineers reviewing the TPS259241DRCR datasheet, TPS259241DRCR pinout, TPS259241DRCR application, or TPS259241DRCR equivalent, key selection criteria include auto-retry thermal fault response, BFET-controlled back-to-back FET support for reverse current blocking, UVLO threshold of 4.3 V, and VSON-10 package compatibility with high-density board layouts.

Technical Context

The TPS259241DRCR implements a hot-swap controller with integrated N-channel pass FET and dedicated BFET gate driver for external back-to-back NFET configuration. Its protection architecture combines fast-trip comparator (160% of I_LIM) with thermal foldback and internal 15-V OV clamp-enabling safe operation during input surges, short circuits, and reverse energy dump scenarios.

It features dual-function EN/UVLO pin (1.4-V enable threshold, 4.3-V UVLO rising), programmable current limit via ILIM resistor (10–162 kΩ range), and dV/dT pin with 220-nA charging current and 4.85× gain to set output ramp time using an external capacitor-supporting precise inrush control without additional circuitry.

Key Specifications

Pinout & Package

VSON-10 (DRC) package with 3.00 mm × 3.00 mm body size and exposed thermal pad (GND-connected). Pin 1 is top-left corner (dV/dT), pin numbering follows standard counter-clockwise sequence.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS259240DRCR and TPS259652RQWR, the TPS259241DRCR uniquely combines auto-retry thermal response, BFET-controlled reverse-current blocking, and programmable dV/dT-making it optimal for SSDs, PCIe cards, and adapter-powered devices requiring autonomous fault recovery and bidirectional power path integrity.

Availability

TPS259241DRCR is available at Aetrix Electronics and suitable for adapter-powered devices, SSD/HDD drives, and server auxiliary supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

Supply support for TPS259241DRCR 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-level integration.

The TPS25924x family is designed specifically for high-density, high-reliability power path protection in computing, storage, and communications infrastructure-addressing inrush, overvoltage, overcurrent, and reverse-current challenges in compact form factors.

FAQ

What is the thermal shutdown behavior of the TPS259241DRCR?

The TPS259241DRCR features auto-retry thermal shutdown: when junction temperature exceeds 150°C, it disables the pass FET, then automatically attempts restart once temperature falls below 140°C. This cycle repeats until the thermal fault is resolved-unlike the latched TPS259240DRCR, which requires EN/UVLO toggle or power cycle. The behavior is intrinsic to the TPS259241DRCR silicon design and requires no external configuration.

How does the BFET pin function in the TPS259241DRCR?

The BFET pin on the TPS259241DRCR drives the gate of an external NFET in back-to-back configuration with the internal pass FET. It sources 2 µA to charge the gate and discharges it through a 26-Ω internal resistor for sub-microsecond turnoff-blocking reverse current flow from load to source during input failure. This capability is critical in SSDs and PCIe cards where holdup capacitance must not feed back into a collapsing VIN rail.

What determines the current limit accuracy of the TPS259241DRCR?

The TPS259241DRCR achieves ±8% current limit accuracy at 3.7 A across temperature, voltage, and process variation-verified per datasheet Electrical Characteristics table. This accuracy stems from trimmed internal current-sense amplifier gain and matched transistor ratios, not external resistor tolerance. The ILIM resistor sets nominal trip point, but the TPS259241DRCR's internal calibration ensures consistent performance regardless of R_ILIM drift or noise.

Can the TPS259241DRCR operate with input voltages above 13.8 V?

Yes-the TPS259241DRCR sustains up to 20 V continuously on VIN, entering overvoltage protection mode above 13.8 V. In this mode, its internal clamp limits output to 15 V (13.8–16.5 V range), dissipating excess power as heat. Designers must verify thermal performance under sustained OVP conditions, as PD_OVP = (V_VIN – V_OVC) × I_OUT. Operation beyond 20 V risks permanent damage per Absolute Maximum Ratings.

What is the purpose of the dV/dT pin on the TPS259241DRCR?

The dV/dT pin on the TPS259241DRCR controls output voltage slew rate at startup: connecting a capacitor from this pin to GND sets ramp time via a 220-nA current source and 4.85× gain. For example, a 1-nF capacitor yields ~12 ms ramp from 0 to 12 V. This prevents inrush-induced rail collapse and meets timing requirements in SATA, PCIe, and other standards-without needing external timers or op-amps.