Texas Instruments TPS26602RHFR

Overview

TPS26602RHFR from Texas Instruments is a 60-V, 2-A industrial eFuse IC with integrated reverse input polarity protection down to –60 V, fixed 38-V overvoltage clamp, and adjustable current limit (0.1–2.23 A ±5% at 1 A). It features back-to-back MOSFETs with 150-mΩ total R_ON, IMON current monitor output (±8.5% accuracy), and selectable fault response (Auto-Retry mode). Used in programmable logic controllers and redundant supply ORing for surge-protected DC bus control.

For engineers reviewing the TPS26602RHFR datasheet, TPS26602RHFR pinout, TPS26602RHFR application, or TPS26602RHFR equivalent, key selection criteria include its fixed 38-V OVP clamp (vs. adjustable OVP in TPS26600/1), HTSSOP-16 package, –40°C to +125°C operation, reverse polarity blocking, and UL 2367/UL60950 safety certification - critical for industrial power rail protection design.

Technical Context

The TPS26602RHFR implements dual N-channel back-to-back FET architecture enabling bidirectional reverse-current blocking and ±60-V input tolerance. Its internal protection control block integrates UVLO, dV/dt-controlled soft-start via external capacitor on dVdT pin, and fast-trip comparator (250 ns delay) for hot-short events.

Unlike TPS26600/1, the TPS26602RHFR uses a fixed 38-V overvoltage clamp (36–40 V typ.) instead of programmable OVP cut-off, eliminating external resistor divider on OVP pin - simplifying layout while constraining maximum safe bus voltage. MODE pin configures Auto-Retry fault response only (not latch-off or circuit-breaker).

Key Specifications

Pinout & Package

TPS26602RHFR is housed in a 16-pin HTSSOP (PWP) package, 5.00 mm × 4.40 mm body size, with exposed PowerPad™ thermally connected to RTN. Pin 1 is IN (input power), Pin 15/16 are OUT (output power), and Pin 9 is GND (system ground reference).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS26602RHFR, TPS26600RHFR offers flexible OVP response but demands additional components and configuration; TPS26601RHFR provides deterministic latch-off but sacrifices auto-recovery - TPS26602RHFR uniquely balances transient resilience with autonomous recovery in high-availability industrial power systems.

Availability

TPS26602RHFR is available at Aetrix Electronics and suitable for programmable logic controllers, distributed control systems, and industrial surge protection modules requiring stable component supply across extended temperature and high-reliability operating conditions.

Supply support for TPS26602RHFR 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 over 50 years of industrial-grade product development.

The TPS2660x family was designed specifically for high-voltage industrial power rail protection - integrating reverse polarity blocking, surge resilience, and functional safety features into compact eFuse ICs for PLC, DCS, and ORing applications.

FAQ

What is the overvoltage protection mechanism of the TPS26602RHFR?

The TPS26602RHFR implements a fixed 38-V overvoltage clamp (36–40 V range), not a cut-off. When input exceeds this threshold, internal circuitry limits V_OUT to ~38 V while sustaining load current - preventing downstream damage without interrupting power. This differs from TPS26600/1, which use adjustable OVP cut-off. The OVP pin must be tied to RTN to enable clamping in the TPS26602RHFR.

Can the TPS26602RHFR replace the TPS26600RHFR on the same PCB?

No - although both use the same 16-pin HTSSOP package, the TPS26602RHFR requires OVP pin connected to RTN for clamp activation, whereas TPS26600RHFR uses OVP for adjustable cut-off and leaves it floating or configures with a resistor divider. Additionally, MODE pin behavior differs: TPS26602RHFR only supports Auto-Retry when open, while TPS26600RHFR supports multiple modes. Direct substitution requires schematic and firmware updates.

What is the minimum current limit setting for the TPS26602RHFR?

The minimum adjustable current limit for the TPS26602RHFR is 0.1 A (±5% accuracy at 1 A), achieved with a 120-kΩ resistor from ILIM to RTN. An open ILIM connection yields a factory-limited 55-mA trip point for single-point-failure testing per UL60950. Shorting ILIM results in ~95-mA trip - all values verified across –40°C to +125°C.

How does the TPS26602RHFR handle reverse input voltage conditions?

The TPS26602RHFR blocks reverse input voltages down to –60 V using integrated back-to-back N-channel MOSFETs. Its reverse protection comparator triggers within 1.5 µs when V_IN – V_OUT falls below –10 mV (typ.), turning off the FETs and asserting FLT. Reverse leakage remains ≤50 µA at –60 V, ensuring no power loss or damage during accidental reverse connection in field wiring.

Is the TPS26602RHFR qualified for functional safety applications?

Yes - the TPS26602RHFR is functional safety capable, with TI providing FMEDA reports, FIT rate data (124.5 failures per billion hours), and safety analysis documentation to support ISO 13849 PL e and IEC 61508 SIL 2 system-level certification. Its integrated diagnostics (open/short ILIM detection, thermal shutdown, FLT signaling) meet hardware fault tolerance requirements for safety-related industrial control subsystems.