Texas Instruments TPS54613PWPG4

Overview

TPS54613PWPG4 from Texas Instruments is a 3-V to 6-V input, 1.5-V fixed-output, 6-A synchronous buck PWM converter with integrated 30-mΩ high- and low-side MOSFETs, internal compensation, and powergood signaling. It delivers up to 6 A continuous output current in thermally enhanced 28-pin HTSSOP (PWP) PowerPAD™ package and is designed for point-of-load regulation in FPGAs, DSPs, and microprocessors.

For engineers reviewing the TPS54613PWPG4 datasheet, TPS54613PWPG4 pinout, TPS54613PWPG4 application, or TPS54613PWPG4 equivalent, key selection considerations include its 1.5-V ±2% output accuracy over temperature and load, adjustable/externally set switching frequency (280–700 kHz), integrated current limiting (7.2–12 A), thermal shutdown (135–165°C trip), and PowerPAD™ thermal performance (R_θJA = 18.2°C/W with solder).

Technical Context

The TPS54613PWPG4 implements a voltage-mode synchronous buck topology with an internally compensated error amplifier (26 dB open-loop gain, 3–5 MHz unity-gain bandwidth) and adaptive dead-time control to prevent shoot-through. Its PWM comparator features 70–85 ns propagation delay and 100 ns leading-edge blanking for robust current-limit response.

It integrates dual 30-mΩ MOSFETs (r_DS(on) tested at 3 A, 3 V and 6 V), a 0.891-V precision reference (±0.006 V over −40°C to 125°C), and a programmable oscillator supporting fixed 350/550 kHz or resistor-adjusted 280–700 kHz operation via RT/FSEL pins.

Key Specifications

Pinout & Package

TPS54613PWPG4 is housed in a 28-pin HTSSOP (PWP) package with exposed thermal pad (PowerPAD™), requiring solder connection to AGND for optimal thermal performance (R_θJA = 18.2°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck regulator applications.

Compared with TPS54613PWPG4, TPS54623RTWR offers higher peak current and smaller package but reduced thermal headroom, while MP2315GJ-Z sacrifices configurability and monitoring for integration and cost-making TPS54613PWPG4 optimal for thermally demanding, sequenced, and frequency-tuned 1.5-V POL designs.

Availability

TPS54613PWPG4 is available at Aetrix Electronics and suitable for FPGA power delivery, DSP point-of-load regulation, optical line card supplies, and notebook CPU core voltage applications requiring stable component supply and long-term industrial availability.

Supply support for TPS54613PWPG4 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 conversion ICs.

The TPS5461x family was engineered specifically for high-density, low-voltage, high-current point-of-load applications in computing, communications, and industrial systems-emphasizing integration, thermal performance, and ease of use.

FAQ

What is the output voltage tolerance of the TPS54613PWPG4 over temperature and load?

The TPS54613PWPG4 provides a fixed 1.5-V output with ±2.0% regulation accuracy across the full operating range: −40°C to 125°C junction temperature, 3 V to 6 V input, and 0 A to 6 A load. This specification is guaranteed in the datasheet's Electrical Characteristics table and reflects worst-case deviation from nominal under all specified conditions-not typical or room-temperature-only performance. The TPS54613PWPG4 achieves this via factory-trimmed internal reference and matched MOSFETs.

Does the TPS54613PWPG4 require external compensation components?

No, the TPS54613PWPG4 features an internally compensated voltage-mode control loop optimized for standard output filter components. It supports inductors from 4.7 µH to 10 µH and common ceramic or polymer output capacitors without requiring external Type II or Type III compensation networks. This simplifies design, reduces BOM count, and improves consistency across production units-key advantages confirmed in the device's Feature Description and Typical Application sections.

How does the TPS54613PWPG4 handle thermal overload conditions?

The TPS54613PWPG4 incorporates thermal shutdown with a trip point of 135–165°C and 10°C hysteresis. When junction temperature exceeds the threshold, the controller disables both MOSFETs and halts switching. Recovery occurs only after temperature falls below (trip −10°C), followed by automatic restart via the internal slow-start circuit. This behavior-documented in Section 7.3.10-prevents damage during sustained overload or inadequate PCB copper, distinguishing it from simple current limiting alone.

Can the switching frequency of the TPS54613PWPG4 be synchronized to an external clock?

No, the TPS54613PWPG4 does not support external clock synchronization. Its oscillator is either internally fixed (350 kHz or 550 kHz selected via FSEL pin) or resistor-adjusted (280–700 kHz via RT-to-AGND). The datasheet contains no SYNC pin, timing diagram, or functional description for external clock input-unlike later TI families such as TPS546D24. Therefore, TPS54613PWPG4 operates as a free-running oscillator only.

What is the purpose of the multiple VIN and PGND pins on the TPS54613PWPG4?

The TPS54613PWPG4 allocates five VIN pins (20–24) and five PGND pins (15–19) to minimize parasitic resistance and inductance in high-current paths. This reduces voltage drop under 6-A load, improves efficiency, lowers EMI, and enhances thermal distribution across the package. Layout guidelines in the datasheet explicitly require tying all VIN pins together with wide copper and connecting all PGND pins directly to the input/output capacitor negatives and PowerPAD™-a design necessity validated by thermal imaging and efficiency testing.