Texas Instruments TPS54614PWPR

Overview

TPS54614PWPR from Texas Instruments is a 3-V to 6-V input, 6-A synchronous buck PWM converter with integrated 30-mΩ high- and low-side MOSFETs, fixed 1.8-V output voltage (±3% over temperature/load), internal compensation, and PowerPAD™ HTSSOP-28 package for high-density point-of-load regulation in FPGAs and microprocessors.

For engineers reviewing the TPS54614PWPR datasheet, TPS54614PWPR pinout, TPS54614PWPR application, or TPS54614PWPR equivalent, this device delivers fast transient response, adjustable switching frequency (280–700 kHz), powergood signaling, thermal shutdown, and cycle-by-cycle current limiting - all critical for stable core voltage regulation in high-performance digital systems.

Technical Context

The TPS54614PWPR implements a voltage-mode synchronous buck topology with an internally compensated error amplifier (3 MHz unity-gain bandwidth), adaptive dead-time control to prevent shoot-through, and a bootstrap-driven high-side gate driver requiring a 0.022–0.1-µF ceramic capacitor between BOOT and PH. Its PWM comparator features 70–85 ns propagation delay and 100 ns leading-edge blanking.

Control logic integrates undervoltage lockout (2.95 V start / 2.8 V stop), slow-start (3.3 ms internal ramp), and open-drain PWRGD monitoring VSENSE at 90% of 0.891-V reference. Thermal shutdown activates at 150°C with 10°C hysteresis, and current limit responds within 200 ns at 7.2–12 A depending on VIN.

Key Specifications

Pinout & Package

TPS54614PWPR uses a thermally enhanced 28-pin HTSSOP (PWP) package with exposed PowerPAD™ thermal pad soldered to PCB ground plane for optimal heat dissipation. Pin count and layout match TI's SWIFT™ family standard for drop-in compatibility across output voltages.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS54614PWPR, TPS54620RGYT offers output voltage flexibility at the cost of added external components and layout complexity, while MP2315GJ-Z trades away PWRGD, frequency adjustability, and thermal performance for minimal footprint - making TPS54614PWPR optimal for industrial and FPGA applications demanding reliability, diagnostics, and thermal headroom.

Availability

TPS54614PWPR is available at Aetrix Electronics and suitable for FPGA core supplies, ASIC I/O regulation, and microprocessor SoC rails requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TPS54614PWPR 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, with decades of expertise in high-efficiency DC-DC conversion and automotive-grade reliability.

The TPS54614PWPR belongs to TI's SWIFT™ synchronous buck regulator product line, engineered specifically for high-current, low-voltage point-of-load applications in FPGAs, ASICs, and microprocessors where thermal density and transient response are critical.

FAQ

What is the maximum continuous output current of the TPS54614PWPR?

The TPS54614PWPR delivers 6 A continuous output current under recommended operating conditions (T_A ≤ 85°C, proper PCB thermal design). This rating is enabled by its dual 30-mΩ MOSFETs and PowerPAD™ HTSSOP-28 package with R_θJA = 18.2°C/W. Peak current limit ranges from 7.2 A (at 3 V input) to 12 A (at 6 V input), but sustained operation above 6 A requires derating based on thermal analysis of the specific PCB layout.

Does the TPS54614PWPR require external compensation components?

No, the TPS54614PWPR features internal compensation optimized for standard output filter components. It supports inductors from 4.7 µH to 10 µH and ceramic output capacitors without requiring external Type II or Type III compensation networks. This simplifies design, reduces BOM count, and accelerates time-to-market for applications using the fixed 1.8-V output configuration.

How does the PWRGD pin function on the TPS54614PWPR?

The PWRGD pin on the TPS54614PWPR is an open-drain output that goes high-impedance when VSENSE ≥ 90% of the internal 0.891-V reference (i.e., ≥1.604 V for 1.8-V output), and pulls low otherwise. It also asserts low during UVLO, thermal shutdown, or when SS/ENA is below 0.82 V. This signal is commonly used for processor reset, supply sequencing, or fault indication in FPGA and microprocessor systems.

Can the switching frequency of the TPS54614PWPR be adjusted, and how?

Yes, the TPS54614PWPR supports three frequency modes: fixed 350 kHz (FSEL ≤ 0.8 V), fixed 550 kHz (FSEL ≥ 2.5 V), or externally adjustable 280–700 kHz (FSEL floated, RT resistor connected to AGND). For example, a 100-kΩ resistor on RT sets ~500 kHz. The frequency selection directly impacts inductor size, efficiency, and EMI profile - enabling system-level optimization without changing the IC.

What thermal considerations apply to the TPS54614PWPR in high-power operation?

The TPS54614PWPR relies on its exposed PowerPAD™ thermal pad for heat dissipation. With proper soldering to a 4-layer PCB having 1.5 oz copper on top/bottom layers and 12 thermal vias, R_θJA is 18.2°C/W - allowing full 6-A operation at +85°C ambient. Without soldered PowerPAD™, R_θJA rises to 40.5°C/W, limiting usable current. Thermal shutdown activates at 150°C with 10°C hysteresis, providing fail-safe protection during overload or poor airflow conditions.