Texas Instruments TPS54010PWPR

Overview

TPS54010PWPR 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 operates with separate PVIN (2.2–4 V) and VIN (3–4 V) power rails and delivers point-of-load regulation for FPGAs and DSPs in telecom infrastructure.

For engineers reviewing the TPS54010PWPR datasheet, TPS54010PWPR pinout, TPS54010PWPR application, or TPS54010PWPR equivalent, key selection considerations include its dual-input rail architecture (PVIN/VIN), thermally enhanced HTSSOP-28 PowerPAD™ package, 0.891-V ±1% internal reference, fast transient response enabled by high-bandwidth error amplifier (90–110 dB open-loop gain), and robust protection including peak current limit and thermal shutdown.

Technical Context

The TPS54010PWPR implements a synchronous buck topology with adaptive dead-time control to prevent shoot-through, using an internally trimmed 0.891-V bandgap reference and a high-performance voltage error amplifier (3–5 MHz unity-gain bandwidth). Its PWM comparator features 70–85 ns propagation delay and 100 ns leading-edge blanking for accurate current sensing.

It supports three frequency modes: internally set at 350 kHz (RT floating, SYNC ≤0.8 V), 550 kHz (SYNC ≥2.5 V), or externally programmed via RT-to-AGND resistor (280–700 kHz); synchronization input accepts 300–700 kHz external clocks with 50 ns pulse width tolerance.

Key Specifications

Pinout & Package

The TPS54010PWPR is housed in a thermally enhanced 28-pin HTSSOP (PWP) PowerPAD™ package measuring 9.70 mm × 4.40 mm, with exposed thermal pad soldered to AGND for optimal heat dissipation in high-current applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS54310PWPR and LM26420XSDX, the TPS54010PWPR uniquely supports 14-A single-rail conversion with true PVIN/VIN separation-enabling efficient, sequenced-free operation from mixed 2.5-V/3.3-V backplanes-while maintaining full external compensation flexibility and thermal performance in the same footprint.

Availability

TPS54010PWPR is available at Aetrix Electronics and suitable for telecom infrastructure, FPGA power delivery, networking switch fabrics, and DSP I/O supply applications requiring stable component supply across extended product lifecycles.

Supply support for TPS54010PWPR 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-efficiency DC/DC conversion.

The TPS54010PWPR belongs to TI's SWIFT™ family of high-current synchronous buck converters, designed specifically for point-of-load regulation in high-density communications and computing systems demanding low-voltage, high-current, and thermally robust power delivery.

FAQ

What is the maximum duty cycle supported by the TPS54010PWPR?

The TPS54010PWPR supports a maximum duty cycle of 90%, which limits the achievable output voltage based on the minimum PVIN level (VO(max) ≈ 0.9 × PVIN(min)). This constraint prevents regulation loss during large load transients that demand extended on-time; designers must verify worst-case duty cycle under full load and minimum input conditions to ensure stable operation of the TPS54010PWPR.

Can PVIN and VIN be tied together in the TPS54010PWPR design?

Yes, PVIN and VIN can be connected to the same 3.3-V supply in the TPS54010PWPR design, simplifying power delivery at the cost of losing the independent rail advantage. The device remains fully functional, but the undervoltage lockout (UVLO) still references VIN, and the internal bias regulator continues to derive VBIAS from VIN. This configuration is validated in TI's application notes and maintains all protections and performance specs of the TPS54010PWPR.

How does the TPS54010PWPR handle input voltage sequencing between PVIN and VIN?

Unlike many dual-rail converters, the TPS54010PWPR tolerates arbitrary sequencing of PVIN and VIN without damage: if VIN rises before PVIN, the slow-start releases and PWM runs at max duty until PVIN ramps up; if PVIN rises first, the device remains disabled until VIN crosses the 2.95-V UVLO threshold. This robustness eliminates external sequencing circuitry and ensures safe startup in complex backplane environments for the TPS54010PWPR.

What is the recommended layout practice for AGND and PGND in the TPS54010PWPR?

TI specifies separate analog (AGND) and power (PGND) ground planes for the TPS54010PWPR, tied together only at the PowerPAD™ thermal pad (which must connect to AGND). Input/output capacitors, PGND pins, and inductor return must attach exclusively to the PGND plane; compensation network, VBIAS bypass, and RT resistor must reference only AGND. Violating this separation introduces noise coupling that degrades regulation accuracy and transient response of the TPS54010PWPR.

Does the TPS54010PWPR support external synchronization, and what are the requirements?

Yes, the TPS54010PWPR supports external synchronization via the SYNC pin across 300–700 kHz. To achieve lock, a resistor must be connected from RT to AGND, sized to set the free-running frequency to 80% of the external clock frequency. The SYNC signal must meet 50 ns minimum pulse width, 2.5 V high-level, and 0.8 V low-level thresholds. This capability enables EMI reduction through frequency dithering or deterministic alignment in multi-rail systems using the TPS54010PWPR.