Texas Instruments TPS259850RQPR

Overview

TPS259850RQPR from Texas Instruments is a stackable 80-A eFuse IC with integrated 0.59-mΩ FET, precise ±1.4% analog current monitoring, fast <200-ns short-circuit response, and adjustable dV/dt slew rate control - deployed in high-power server power rails and datacenter switch input protection.

For engineers reviewing the TPS259850RQPR datasheet, TPS259850RQPR pinout, TPS259850RQPR application, or TPS259850RQPR equivalent, key selection criteria include RMS/peak current rating (60 A / 80 A), ±6% overcurrent threshold accuracy, parallel synchronization capability via SWEN/FLT/PG pins, and QFN-26 thermal performance (R_θJA = 19.9°C/W).

Technical Context

The TPS259850RQPR implements dual-stage overcurrent protection: a programmable circuit-breaker mode (IOCP = 10–60 A, ±6%) with user-adjustable blanking timer (ITIMER), plus fixed/fast-trip thresholds (e.g., 99–290 A depending on MODE) for sub-200-ns fault clearing. It supports active current sharing across parallel devices using synchronized SWEN signaling and ILIM-based threshold alignment.

Its analog IMON output delivers >500-kHz bandwidth and ±1.4% gain accuracy for real-time load telemetry, while integrated TEMP, FLT, PG, and CMPOUT pins enable closed-loop thermal management, fault logging, power sequencing, and system-level comparator functions without external components.

Key Specifications

Pinout & Package

TPS259850RQPR uses a thermally enhanced 26-pin QFN package (RQP) with four IN and four OUT power pads for low-inductance, high-current routing and uniform heat spreading across PCB copper planes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS259850RQPR, the TPS25982ARQPR offers reduced current capacity and no stacking capability, while the MP5418GD-Z trades IMON precision and thermal visibility for lower unit cost - making TPS259850RQPR optimal for scalable, telemetry-driven datacenter power architectures.

Availability

TPS259850RQPR is available at Aetrix Electronics and suitable for server power rail protection, datacenter switch input stages, and graphics card power delivery requiring stable component supply and long-term production continuity.

Supply support for TPS259850RQPR 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 specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability power IC design.

The TPS25985x product line delivers stackable, high-current eFuses for next-generation datacenter, AI accelerator, and high-performance computing infrastructure demanding precision current monitoring and robust fault resilience.

FAQ

What is the maximum continuous current rating for the TPS259850RQPR?

The TPS259850RQPR is rated for 60-A RMS continuous current at junction temperatures ≤125°C. Its 80-A peak rating supports short-duration transients such as GPU burst loads or inrush into large capacitive banks. Thermal design must account for R_θJA = 19.9°C/W and ensure adequate PCB copper area under the QFN-26 package to maintain safe SOA operation.

How does the TPS259850RQPR support parallel operation across multiple units?

The TPS259850RQPR supports unlimited parallel stacking via dedicated SWEN, FLT, and PG pins that coordinate state transitions, fault propagation, and active current sharing. When configured in primary/secondary mode using the MODE pin, devices synchronize startup timing and dynamically balance load current using ILIM-based threshold alignment - eliminating current hogging and ensuring uniform thermal stress.

What is the accuracy and bandwidth of the current monitoring function in the TPS259850RQPR?

The TPS259850RQPR provides ±1.4% full-scale accuracy on its IMON analog current monitor output with >500-kHz small-signal bandwidth. This enables real-time, high-fidelity telemetry for Intel PSYS/PROCHOT# compliance and dynamic power capping in CPU/GPU subsystems - verified across –40°C to +125°C and 10–50-A load ranges per datasheet Figure 7-9.

Can the TPS259850RQPR protect against both overvoltage and overtemperature events?

Yes, the TPS259850RQPR includes fixed 16.6-V input overvoltage protection with 1.57-µs response time and overtemperature protection with 150°C shutdown threshold and 12.5°C hysteresis. Both protections are internally monitored and assert the FLT pin while disabling the FET. The integrated TEMP pin also provides analog die temperature feedback for system-level thermal management beyond automatic shutdown.

What external components are required to configure overcurrent protection on the TPS259850RQPR?

To configure overcurrent protection, the TPS259850RQPR requires three external resistors: one from ILIM to GND (sets startup current limit), one from IMON to GND (sets steady-state IOCP threshold), and one from IREF to GND (establishes reference for both limits). An optional capacitor on ITIMER adds transient blanking, and a capacitor on DVDT controls output slew rate - no additional ICs or complex circuitry needed.