Texas Instruments TPS16530PWPR

Overview

TPS16530PWPR from Texas Instruments is a 58-V, 4.5-A industrial eFuse with integrated 31-mΩ Hot-Swap FET, ±7% adjustable current limit (0.6–4.5 A), 2× pulse current support for transient loads, and thermal regulation during inrush. It protects telecom power amplifiers, medical equipment, fire alarm panels, and industrial printers against overcurrent, undervoltage, short circuit, and thermal faults.

For engineers reviewing the TPS16530PWPR datasheet, TPS16530PWPR pinout, TPS16530PWPR application, or TPS16530PWPR equivalent, this device delivers precise current monitoring (±6%), programmable slew rate control via dVdT pin, PGOOD signaling for DC-DC enable/disable coordination, and selectable auto-retry/latch-off fault response - all in a compact 20-pin HTSSOP package rated for –40°C to +125°C operation.

Technical Context

The TPS16530PWPR implements a dual-stage overcurrent protection architecture: a precision current-limit amplifier (±7% accuracy) for sustained overload management and a dedicated fast-trip comparator (1 µs response, 45-A threshold) for hard short-circuit isolation. Its thermal regulation loop actively controls junction temperature at 145°C (typical) during capacitive load charging, enforcing a 1.3-s timeout to prevent sustained overheating.

Undervoltage lockout is set via external resistor divider on the UVLO pin (±2% threshold accuracy), while output slew rate is defined by an external capacitor on dVdT (25 V/V gain). The MODE pin selects between latch-off and auto-retry behavior for overcurrent/thermal faults, and the IMON pin provides a 27.9 µA/A analog current monitor output with <0.5% linearity error across 0.6–4.5 A.

Key Specifications

Pinout & Package

TPS16530PWPR is housed in a 20-pin HTSSOP (PWP) package measuring 6.50 mm × 4.40 mm with exposed PowerPAD™ thermally connected to GND. Pin 1 is IN (power input), Pin 18 is OUT (regulated output), and Pin 9 is dVdT (slew rate control).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS16530PWPR, TPS26631PWPR offers lower cost but sacrifices 58-V capability, pulse current handling, and thermal regulation - making it unsuitable for telecom or industrial hot-plug use. LTC4215IFE#PBF provides robust fault reporting but lacks the accuracy, voltage headroom, and transient resilience needed for modern 48–58-V systems.

Availability

TPS16530PWPR is available at Aetrix Electronics and suitable for telecom infrastructure, medical diagnostics, fire safety systems, and industrial printing applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for TPS16530PWPR 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 industrial and automotive power solutions.

The TPS16530 product line delivers industrial-grade eFuses designed for robust hot-swap protection in 4.5–58-V systems - targeting applications demanding precise current limiting, thermal resilience, and seamless integration into complex power architectures.

FAQ

What is the maximum input voltage rating for the TPS16530PWPR?

The TPS16530PWPR has an absolute maximum input voltage rating of 67 V, with recommended operating range from 4.5 V to 58 V. This 58-V rating meets IPC9592B clearance requirements for 20-pin HTSSOP packaging, enabling safe deployment in 48-V telecom and industrial power systems where transient spikes up to 67 V may occur.

How does the TPS16530PWPR implement 2× pulse current support?

The TPS16530PWPR activates 2× pulse current mode only after PGOOD goes high, limiting it to ≤25.5 ms duration at double the programmed I_OL. This prevents activation during startup or auto-retry cycles. For example, with R_ILIM = 4.02 kΩ (I_OL = 4.5 A), the device delivers up to 9 A for motor startup or capacitor charging - verified in Figure 8-4 of the datasheet.

Can the TPS16530PWPR be used without connecting the dVdT pin?

Yes - leaving the dVdT pin floating enables fastest output ramp time (495 µs typical for 10%–90% V_OUT at 24 V), useful for low-capacitance loads. However, for large output capacitors (>100 µF), a capacitor (e.g., 22 nF) from dVdT to GND is required to limit inrush current and prevent thermal regulation activation, as detailed in Section 8.3.1.

What is the accuracy of the current limit function in the TPS16530PWPR?

The TPS16530PWPR provides ±7% current limit accuracy across temperature (–40°C to +125°C) and input voltage (4.5–58 V), verified per Section 6.5 of the datasheet. At 4.5 A setting (R_ILIM = 4.02 kΩ), the actual trip point remains within 4.185–4.815 A - enabling tighter power supply design margins than typical ±15% eFuses.

How does thermal regulation work in the TPS16530PWPR during power-up?

The TPS16530PWPR's thermal regulation loop actively controls junction temperature at 145°C (typical) by modulating FET gate drive during inrush. If thermal regulation engages, a 1.3-s timeout begins; if V_OUT fails to stabilize within that window, the FET turns off. This prevents sustained overheating during output shorts or oversized capacitive loads - a feature absent in most competing eFuses.