Texas Instruments TPS26602PWPR

Overview

TPS26602PWPR from Texas Instruments is a 60-V, 2-A industrial eFuse with integrated reverse input polarity protection and fixed 38-V overvoltage clamp. It features back-to-back MOSFETs (150-mΩ total R_ON), adjustable current limit (0.1–2.23 A ±5% at 1 A), IMON current monitor output (±8.5% accuracy), and selectable fault response modes. It is used in programmable logic controllers and redundant supply ORing to protect downstream loads during surge, brownout, or reverse-polarity events.

For engineers reviewing the TPS26602PWPR datasheet, TPS26602PWPR pinout, TPS26602PWPR application, or TPS26602PWPR equivalent, key selection criteria include its fixed 38-V OVP clamp (distinct from adjustable OVP variants), HTSSOP-16 package with PowerPad, –40°C to +125°C operation, and UL 2367/UL60950 safety recognition for industrial power rail protection.

Technical Context

The TPS26602PWPR implements dual N-channel back-to-back FET architecture enabling bidirectional reverse-current blocking down to –60 V without external components. Its internal robust protection control block integrates UVLO, slew-rate-controlled dV/dt ramp-up via external capacitor, thermal shutdown (157°C), and fast-trip comparator (250 ns delay) for hot-short detection.

Unlike TPS26600/TPS26601, the TPS26602PWPR uses a fixed 38-V overvoltage clamp (36–40 V typ) instead of adjustable OVP cut-off; OVP pin must be tied to RTN to enable clamping. MODE pin configures fault response between auto-retry and circuit breaker modes, while ILIM resistor sets current limit with ±5% accuracy at 1 A across temperature.

Key Specifications

Pinout & Package

TPS26602PWPR is packaged in a 16-pin HTSSOP (PWP) with exposed PowerPad for thermal enhancement. The PowerPad must be connected to the RTN plane using multiple vias. Pin count and layout match TI's standard HTSSOP footprint for drop-in compatibility with existing designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS26600PWPR, the TPS26602PWPR trades OVP adjustability for deterministic 38-V clamping and simplified layout; versus TPS26602RHFQ, it retains proven HTSSOP manufacturability but with higher thermal resistance - making it optimal for cost-sensitive, thermally moderate industrial applications.

Availability

TPS26602PWPR is available at Aetrix Electronics and suitable for programmable logic controllers, distributed control systems, and industrial surge protection modules requiring stable component supply, long-term lifecycle support, and UL-certified protection functionality.

Supply support for TPS26602PWPR 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 ICs for industrial, automotive, and communications markets.

The TPS2660x family was designed specifically for high-reliability industrial power rail protection - integrating reverse polarity blocking, surge resilience, and functional safety documentation into compact eFuse solutions.

FAQ

What is the overvoltage protection behavior of the TPS26602PWPR?

The TPS26602PWPR implements a fixed 38-V overvoltage clamp (36–40 V typical), not an adjustable cut-off. When input exceeds this threshold, the device clamps the output to ~38 V while maintaining conduction - unlike TPS26600/TPS26601 which disconnect the FETs. To enable clamping, the OVP pin must be tied to RTN. This behavior is confirmed in Section 5 (Device Comparison Table) and Section 7.5 (Electrical Characteristics) of the TPS26602PWPR datasheet.

Does the TPS26602PWPR support reverse current blocking?

Yes, the TPS26602PWPR provides integrated reverse current blocking down to –60 V input using back-to-back N-channel MOSFETs. It detects reverse polarity via internal comparator thresholds (V_REVTH = –10 mV typical) and turns off both FETs within 1.5 µs. This eliminates the need for external reverse-blocking diodes or MOSFETs and is validated per UL60950 single-point failure testing. The feature is explicitly stated in the Features section and detailed in Section 9.3 of the TPS26602PWPR datasheet.

What is the recommended external component for setting the current limit on the TPS26602PWPR?

The TPS26602PWPR uses a resistor from ILIM pin to RTN to set the current limit. For 2.23-A maximum, a 5.36-kΩ resistor is specified (±1% tolerance recommended). Values from 5.36 kΩ (2.23 A) to 120 kΩ (0.1 A) are supported, with ±5% accuracy at 1 A. The resistor must be connected directly to RTN - not GND - and its value directly determines trip point per the I_OL table in Section 7.5 of the TPS26602PWPR datasheet.

How does the TPS26602PWPR handle thermal shutdown and recovery?

The TPS26602PWPR triggers thermal shutdown at 157°C (T_TSD) with 10°C hysteresis. Upon shutdown, it disables the FETs and asserts FLT. Recovery requires either cooling below 147°C or cycling SHDN - no automatic retry occurs after thermal fault. This behavior differs from overcurrent faults, which support auto-retry mode. Thermal protection is independent of MODE pin configuration and is documented in Section 7.5 (Electrical Characteristics) and Section 9.4 (Device Functional Modes) of the TPS26602PWPR datasheet.

Can the TPS26602PWPR be used in redundant supply ORing applications?

Yes, the TPS26602PWPR is explicitly qualified for redundant supply ORing due to its integrated reverse current blocking and fast fault response (<10 µs). When two TPS26602PWPR devices feed a common load, their back-to-back FET topology prevents backfeeding if one supply fails. This capability is listed in the Applications section and validated in Figure 30 (Hot-Short Response) and Section 10.3 (System Examples) of the TPS26602PWPR datasheet.