Texas Instruments TPS54339EEVM-056

Overview

TPS54339EEVM-056 from Texas Instruments is an evaluation module for the TPS54339E synchronous buck converter, configured to deliver 1.05 V at up to 3 A from a 4.5–23 V input. It implements D-CAP2™ control mode with 600 kHz fixed switching frequency, Eco-mode pulse-skipping at light loads, and features test points for VIN, VOUT, EN, SW, and loop analysis.

For engineers reviewing the TPS54339EEVM-056 datasheet, TPS54339EEVM-056 pinout, TPS54339EEVM-056 application, or TPS54339EEVM-056 equivalent, this module supports rapid validation of power stage performance-including efficiency (up to 88% at 5 V_IN/0.5 A), load/line regulation (±0.3%, +0.8/–0.1%), output ripple (15 mV_PP at 3 A), and transient response-under real-world PCB layout and thermal conditions.

Technical Context

The TPS54339EEVM-056 implements a single-phase, adaptive on-time D-CAP2™ synchronous buck topology using the TPS54339EDDA IC in SO-8 (DDA) package. It integrates high- and low-side MOSFETs, operates at 600 kHz nominal frequency, and uses a 2.2 µH inductor with 22 µF ×2 ceramic output capacitance.

Designed for direct evaluation of the TPS54339E's Eco-mode operation and fast transient response, the board includes accessible test points (TP1–TP9), jumper-controlled enable (JP1), and provisions for output voltage adjustment via R1/R2 feedback divider-set to 1.05 V by default using 8.25 kΩ/22.1 kΩ resistors.

Key Specifications

Availability

TPS54339EEVM-056 is available at Aetrix Electronics and suitable for power supply validation, DC/DC reference design verification, and production-grade efficiency/transient testing requiring stable component supply and documented TI reference hardware.

Supply support for TPS54339EEVM-056 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 company specializing in analog, embedded processing, and power management technologies, with decades of leadership in DC/DC converter innovation.

The TPS54339EEVM-056 belongs to TI's SWIFT™ evaluation module family, designed specifically to accelerate development and validation of high-efficiency, integrated synchronous buck converters for industrial, computing, and communications infrastructure.

FAQ

What is the primary function of the TPS54339EEVM-056?

The TPS54339EEVM-056 is a Texas Instruments evaluation module built around the TPS54339EDDA synchronous buck converter IC. Its primary function is to provide a fully assembled, tested, and characterized platform for validating the electrical performance-including efficiency, transient response, ripple, and regulation-of the TPS54339E in a real PCB environment. The TPS54339EEVM-056 delivers 1.05 V at up to 3 A from a 4.5–23 V input and includes test points, jumpers, and documentation to support lab characterization and design-in decisions.

Can the output voltage of the TPS54339EEVM-056 be adjusted, and how?

Yes, the output voltage of the TPS54339EEVM-056 can be adjusted by modifying the feedback resistor divider network. The default 1.05 V setting uses R1 = 8.25 kΩ and R2 = 22.1 kΩ. To change the output, replace R1 per Equation 1: V_OUT = 0.765 V × (1 + R1/R2). Table 3-1 in the User's Guide lists standard R1 values for common outputs from 1.0 V to 6.5 V. For outputs ≥1.8 V, adding feedforward capacitor C4 (5–22 pF) is recommended to maintain phase margin.

What are the key test points on the TPS54339EEVM-056 and their purposes?

The TPS54339EEVM-056 provides nine labeled test points: TP1 (VIN monitoring), TP2 (VIN ground), TP3 (EN signal), TP4 (loop response injection point), TP5 (VREG5 output), TP6 (switch node), TP7 (analog ground), TP8 (VOUT monitoring), and TP9 (VOUT ground). These enable direct oscilloscope probing for startup/shutdown waveforms, efficiency measurements, closed-loop stability analysis, and transient response evaluation without soldering or modification-critical for accurate characterization of the TPS54339EEVM-056 under varying load and line conditions.

Does the TPS54339EEVM-056 support Eco-mode operation, and how is it verified?

Yes, the TPS54339EEVM-056 fully supports Eco-mode operation inherited from the TPS54339EDDA IC. Eco-mode enables pulse-skipping at light loads to improve efficiency below ~300 mA. This behavior is verified in Figure 4-2 of the User's Guide, which shows light-load efficiency curves at 5 V_IN and 12 V_IN. The TPS54339EEVM-056 maintains >70% efficiency down to 1 mA output current, confirming effective discontinuous conduction mode (DCM) transition without external configuration.

What input and output connectors does the TPS54339EEVM-056 use, and what are their ratings?

The TPS54339EEVM-056 uses two ED555/2DS 2-pin terminal blocks (J1 for VIN, J2 for VOUT), rated for 6 A and 3.5 mm pitch. J1 accepts 4.5–23 V input via 20 AWG wires; J2 delivers 1.05 V at up to 3 A. The board specifies a maximum load current of 2 A when using standard wire lengths to minimize IR drop and ensure measurement accuracy-though full 3 A capability is validated internally with proper thermal management and short leads.