Texas Instruments TPS54010PWPRG4

Overview

TPS54010PWPRG4 from Texas Instruments is a 3-V to 4-V input, 14-A synchronous step-down DC/DC converter with integrated 8-mΩ high- and low-side MOSFETs, adjustable output down to 0.9 V, externally compensated control loop, and 280–700 kHz programmable switching frequency. It delivers high efficiency in point-of-load regulation for FPGAs and DSPs requiring stable 1.5-V or 1.8-V rails.

For engineers reviewing the TPS54010PWPRG4 datasheet, TPS54010PWPRG4 pinout, TPS54010PWPRG4 application, or TPS54010PWPRG4 equivalent, key selection criteria include its dual-input architecture (VIN/PVIN), internal 0.891-V reference accuracy, thermal shutdown at 135°C–165°C, power-good signaling, and compatibility with external frequency synchronization via SYNC/RT pins.

Technical Context

The TPS54010PWPRG4 implements a voltage-mode synchronous buck topology with a high-performance error amplifier (90–110 dB open-loop gain, 3–5 MHz unity-gain bandwidth) and adaptive dead-time control to prevent shoot-through. Its dual-input design separates VIN (3–4 V, control logic supply) from PVIN (2.2–4 V, power stage supply), enabling efficient operation from distributed 2.5-V/3.3-V buses.

It features an internally trimmed 0.891-V reference (±1% over temperature), programmable oscillator with 100-ns minimum on-time and 90% max duty cycle, and peak-current-limit protection triggering at 14.5–21 A. The device integrates slow-start (3.35 ms internal, extendable via SS/ENA capacitor) and undervoltage lockout referenced to VIN (2.95 V start, 2.8 V stop, 0.11 V hysteresis).

Key Specifications

Pinout & Package

TPS54010PWPRG4 is housed in a thermally enhanced 28-pin HTSSOP (PWP) PowerPAD™ package (9.70 mm × 4.40 mm) with exposed thermal pad soldered to AGND for low-junction-to-board thermal resistance (14.4°C/W with solder).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Compared with TPS54010PWPRG4, TPS54310PWP offers reduced current capacity and fixed frequency but smaller footprint, while LM26420QSQX/NOPB provides dual outputs and automotive qualification at the expense of per-channel current limit - both serve distinct system-level needs rather than direct drop-in replacement.

Availability

TPS54010PWPRG4 is available at Aetrix Electronics and suitable for high-density telecom infrastructure, FPGA-based test equipment, and optical networking hardware requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TPS54010PWPRG4 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 designing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and communications markets.

The TPS54010PWPRG4 belongs to TI's high-current synchronous buck converter product line, engineered specifically for point-of-load regulation in space-constrained, high-performance digital systems such as FPGAs, DSPs, and network ASICs.

FAQ

What is the maximum output voltage achievable with TPS54010PWPRG4?

The maximum output voltage of TPS54010PWPRG4 is limited by the PVIN supply and duty cycle constraint: VO(max) ≈ 0.9 × PVIN(min). With PVIN ≥ 2.2 V, the practical maximum is ~1.98 V. Operation near 90% duty cycle risks regulation loss during transients, so designs targeting >1.8 V should verify worst-case duty cycle margins under load step conditions. The TPS54010PWPRG4 is optimized for 0.9–1.8 V outputs.

How does the dual-input architecture (VIN and PVIN) benefit system design with TPS54010PWPRG4?

The TPS54010PWPRG4's separate VIN (3–4 V) and PVIN (2.2–4 V) inputs allow independent sourcing - e.g., VIN from a 3.3-V control bus and PVIN from a 2.5-V power-distribution bus. This eliminates sequencing dependencies, prevents damage during asymmetric power-up, and improves efficiency by matching switch supply voltage to available rail. The UVLO remains VIN-referenced, ensuring safe startup regardless of PVIN timing.

Can TPS54010PWPRG4 be synchronized to an external clock, and what are the requirements?

Yes, TPS54010PWPRG4 supports external synchronization via the SYNC pin across 300–700 kHz. To synchronize, drive a clean CMOS clock into SYNC and connect an RT resistor sized for 80% of the target frequency (e.g., 68 kΩ for 560 kHz sync). The internal oscillator must be disabled by pulling SYNC ≥2.5 V or ≤0.8 V depending on mode; refer to the "Oscillator and PWM Ramp" section of the TPS54010PWPRG4 datasheet for exact configuration.

What is the role of the PowerPAD in the TPS54010PWPRG4 thermal design?

The PowerPAD in the TPS54010PWPRG4 is an exposed copper thermal pad on the underside of the HTSSOP package, electrically connected to AGND. It must be soldered to a large AGND copper area with ≥12 thermal vias to achieve the rated 14.4°C/W junction-to-ambient thermal resistance. Improper PowerPAD connection increases junction temperature, potentially triggering thermal shutdown at <14-A load and degrading long-term reliability.

Does TPS54010PWPRG4 support adjustable soft-start, and how is it implemented?

Yes, TPS54010PWPRG4 supports both internal and external soft-start. Internally, it ramps the reference voltage linearly over 3.35 ms. Externally, connecting a capacitor between SS/ENA and AGND extends start time - e.g., a 100-nF capacitor yields ~33-ms total ramp. The SS/ENA pin also serves as enable: voltage >1.2 V activates the device, with 0.03-V hysteresis and 2.5-µs deglitching to reject noise.