Texas Instruments TPS26636PWPR

Overview

TPS26636PWPR from Texas Instruments is a 60V, 6A industrial eFuse with integrated 31mΩ hot-swap FET, fixed 39V overvoltage clamp, adjustable 0.6–6A current limit (±7%), analog current monitor (±6%), and power-good output. It delivers fast reverse-current blocking (0.17µs), IEC 61000-4-4/4-5 surge immunity, and thermal regulation for PLC power path protection.

For engineers reviewing the TPS26636PWPR datasheet, TPS26636PWPR pinout, TPS26636PWPR application, or TPS26636PWPR equivalent, key selection criteria include its HTSSOP-20 package, 39V OVP clamp (not adjustable cutoff), single-pulse current limiting (no 2× pulse support), and confirmed PLIM functionality for IEC 61010-1-compliant power limiting in factory automation systems.

Technical Context

The TPS26636PWPR implements a precision current-limiting architecture with programmable ILIM resistor setting and integrated thermal regulation that sustains operation up to 145°C before entering foldback. Its PLIM input enables output power capping via external resistor (60.4–150 kΩ), delivering 94–160 W max at 54 V input.

It features dual protection paths: fast short-circuit response (<1 µs) and configurable fault handling (latch-off or auto-retry via MODE pin), plus reverse polarity support using an external N-FET driven by B_GATE and DRV outputs. The device meets UL 2367 (E169910) and IEC 62368-1 safety standards.

Key Specifications

Pinout & Package

Packaged in 20-pin HTSSOP (PWP) with exposed PowerPad™ for thermal dissipation (R_θJB = 10 °C/W). Pin 1 is IN (input power), Pin 18 is OUT (protected output), and Pin 9 is GND - all aligned per TI's Figure 5-4 top-view layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS26633PWPR and TPS26632PWPR, the TPS26636PWPR offers the highest OVP clamp (39 V) while retaining single-pulse current limiting and full PLIM functionality - making it optimal for 48 V industrial rails requiring robust transient headroom without pulse-handling complexity.

Availability

TPS26636PWPR is available at Aetrix Electronics and suitable for factory automation, motor drive encoder supplies, and electronic circuit breaker designs requiring stable component supply, long-term industrial lifecycle support, and traceable sourcing.

Supply support for TPS26636PWPR 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 TPS2663x family is designed specifically for industrial power path protection - integrating eFuse, surge immunity, and programmable power limiting to simplify compliance with IEC 61000-4-5 and IEC 61010-1 in PLCs, DCS, and motor drives.

FAQ

What is the overvoltage protection method used by the TPS26636PWPR?

The TPS26636PWPR implements a fixed 39 V overvoltage clamp - not an adjustable cutoff. When input exceeds 39 V, the device enters constant-voltage regulation mode to hold OUT near 39 V, dissipating excess power internally. This differs from TPS26630/31 variants that use programmable OVP cutoff. The clamp remains active for up to 162 ms per IEC 61000-4-5 surge events.

Does the TPS26636PWPR support reverse polarity protection?

Yes, the TPS26636PWPR supports reverse polarity protection via its B_GATE and DRV pins, which drive an external N-channel FET. When reverse voltage is detected (V_{IN_SYS} – V_OUT < –15 mV), the device asserts DRV within 0.17 µs to pull down the external FET's gate, blocking reverse current flow. No internal reverse-blocking FET is present - external component selection is required per design notes in Section 8.3.

How is output power limiting configured on the TPS26636PWPR?

Output power limiting (PLIM) on the TPS26636PWPR is configured using a resistor from PLIM (Pin 8) to GND. A 100 kΩ resistor sets 100 W max output power at 54 V input; 150 kΩ raises it to 151 W. The PLIM function is active only on TPS26632/33/35/36/37 variants - confirmed in Table 4 and Section 6.5. PLIM accuracy is ±6%, enabling certified energy-limited circuits per IEC 61010-1.

What fault response modes does the TPS26636PWPR support?

The TPS26636PWPR supports two fault response modes selected via the MODE pin: open = latch-off (requires SHDN cycle to reset), and grounded = auto-retry (attempts restart after 670 ms delay). Unlike TPS26631/33/35/37, it does not support 2× pulse overcurrent - its overload response is strictly 1× current limiting. Fault status is reported via open-drain FLT pin with 70 Ω pull-down resistance.

Is the TPS26636PWPR compliant with safety standards for industrial equipment?

Yes, the TPS26636PWPR is UL 2367 recognized (File E169910) and IEC 62368-1 certified. Its integrated protections - including IEC 61000-4-4/4-5 surge immunity, thermal shutdown at 165°C, and programmable power limiting - meet requirements for industrial safety-critical power distribution. Certification applies to the device itself; final system compliance requires validation per end-equipment standards like IEC 61010-1.