Texas Instruments TPS54329EVM-056

Overview

TPS54329EVM-056 from Texas Instruments is an evaluation module for the TPS54329 synchronous buck converter, configured to deliver 1.05 V at up to 3 A from a 4.5–18 V input. It implements D-CAP2™ control mode, features a fixed 700 kHz switching frequency, and includes onboard test points (TP1–TP9), enable jumper (JP1), and input/output connectors (J1/J2) for rapid prototyping of point-of-load power stages.

For engineers reviewing the TPS54329EVM-056 datasheet, TPS54329EVM-056 pinout, TPS54329EVM-056 application, or TPS54329EVM-056 equivalent, this module supports validation of load transient response (±100 mV peak-to-peak at 1→2 A step), output voltage ripple (15 mV_PP at 12 V_IN/3 A), line/load regulation (±0.4%/±0.12%), and efficiency (86.4% at 5 V_IN/0.6 A).

Technical Context

The TPS54329EVM-056 implements a single-phase, adaptive on-time D-CAP2™ synchronous buck topology with integrated high-side and low-side MOSFETs in the TPS54329DDA SOIC-8 package. Its control loop requires no external compensation and is optimized for low-ESR ceramic output capacitors (C9–C11 total 20–68 µF).

Board-level design includes dedicated analog ground (AGND) and power ground (PGND) planes connected at a single point near C6, internal-layer ground planes, and a copper pour on the bottom layer linking SW to L1 and the boost capacitor. Test points TP4 and R3 support loop gain measurement.

Key Specifications

Availability

TPS54329EVM-056 is available at Aetrix Electronics and suitable for power system validation, DC/DC converter reference design verification, and embedded processor core voltage qualification requiring stable component supply and documented test data.

Supply support for TPS54329EVM-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 power conversion ICs and evaluation platforms.

The TPS54329EVM-056 belongs to TI's SWIFT™ synchronous buck evaluation module family, designed specifically to accelerate development of high-efficiency, low-voltage point-of-load supplies for FPGA, ASIC, and microprocessor applications.

FAQ

What is the primary function of the TPS54329EVM-056?

The TPS54329EVM-056 is a ready-to-use evaluation module that demonstrates the performance of the TPS54329 synchronous buck converter. It delivers a fixed 1.05 V output at up to 3 A from a 4.5–18 V input and provides accessible test points, jumpers, and layout documentation to validate efficiency, transient response, ripple, and regulation-enabling rapid power stage characterization without custom PCB design. The TPS54329EVM-056 integrates all necessary passive components and follows TI's recommended layout practices for D-CAP2™ stability.

Can the output voltage of the TPS54329EVM-056 be adjusted?

Yes-the TPS54329EVM-056 output voltage is configurable via resistor R1 in the feedback divider network. The default 1.05 V setting uses R1 = 8.25 kΩ and R2 = 22.1 kΩ (per Table 3-1). To change the output, replace R1 with a value calculated using VO = 0.765 × (1 + R1/R2); common alternatives include 1.2 V (R1 = 12.7 kΩ) and 1.5 V (R1 = 21.5 kΩ). Feedforward capacitor C4 may be added for outputs ≥1.8 V to improve phase margin. The TPS54329EVM-056 schematic and bill of materials confirm these modifiable nodes.

What are the key test points on the TPS54329EVM-056 and their purposes?

The TPS54329EVM-056 includes nine labeled test points: TP1/TP2 monitor VIN and its ground reference; TP3 monitors EN signal; TP4 breaks the control loop for Bode plot measurement; TP5 measures VREG5 (internal 5-V regulator output); TP6 probes the switch node (SW); TP7 accesses analog ground; TP8/TP9 provide VOUT and its ground reference. These points enable direct oscilloscope access to critical waveforms-including start-up, load transients, ripple, and loop response-without soldering or probing fragile traces. All are documented in Table 4-1 of the user's guide and visible on the board silkscreen.

How does the TPS54329EVM-056 support stability analysis?

The TPS54329EVM-056 supports stability analysis via R3 and TP4, which form a break point in the feedback path for injecting signals and measuring loop gain. This allows engineers to perform Bode analysis using a network analyzer or frequency response analyzer, verifying phase margin and gain margin without modifying the control loop. The board's layout isolates AGND and PGND, uses low-ESR ceramic output capacitors (C9–C11 totaling 20–68 µF), and places input decoupling caps near the IC-all aligned with D-CAP2™ stability requirements. The TPS54329EVM-056 user's guide explicitly references TP4 for closed-loop response testing in Section 3.2.

What is the role of JP1 on the TPS54329EVM-056?

JP1 is a 3-pin header that controls the enable (EN) function of the TPS54329 IC on the TPS54329EVM-056. With the jumper installed between EN and ON, the converter operates normally; with it installed between EN and OFF, the device is disabled and output is shut down. This provides safe, tool-free startup sequencing and fault isolation during testing. The user's guide specifies JP1 as the "EN control" in Table 4-1 and details the two-step start-up procedure (Section 4.2) that relies on JP1 positioning-confirming its direct hardware-level control over IC operation. No external logic or voltage source is required to use JP1.