Texas Instruments TPS51513EVM-549

Overview

TPS51513EVM-549 from Texas Instruments is a single-phase D-CAP+™ synchronous buck converter evaluation module designed to demonstrate the TPS51513 controller in high-current, low-voltage VCORE applications. It delivers up to 20 A at output voltages from 0.70 V to 1.05 V (via 3-bit VID) or fixed 1.2 V, powered from an 8–14-V input bus, and supports selectable switching frequencies of 250/300/350/500 kHz.

For engineers reviewing the TPS51513EVM-549 datasheet, TPS51513EVM-549 test setup, TPS51513EVM-549 configuration jumpers, or TPS51513EVM-549 performance curves, this EVM provides validated reference design data, accessible test points (e.g., TP5/VOUT, TP6/IMON, TP3/SW), and configurable OCP, OSR™, and SLP modes for rapid power stage characterization.

Technical Context

The TPS51513EVM-549 implements the TPS51513RHB QFN-32 controller in a complete, six-layer PCB layout with 2-oz copper outer layers. It integrates CSD16404Q5A (high-side) and dual CSD16321Q5 (low-side) NexFET™ MOSFETs, supporting D-CAP+™ adaptive on-time control for fast transient response without external compensation.

Configuration is managed via physical jumpers: J7 sets frequency (250–500 kHz), J8 selects current limit (17–29 A), J9 enables OSR™ overshoot reduction (OFF to Maximum), and S1 configures 3-bit VID (0.70–1.05 V). J10 toggles between VID-controlled and fixed 1.2-V output modes.

Key Specifications

Availability

TPS51513EVM-549 is available at Aetrix Electronics and suitable for power integrity validation, VRM reference design verification, and VCORE regulator qualification requiring stable component supply, traceable documentation, and repeatable lab test conditions.

Supply support for TPS51513EVM-549 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 TPS51513EVM-549 belongs to TI's high-performance buck controller evaluation module product line, engineered specifically to accelerate development of efficient, compact, and transient-responsive VCORE supplies for processors and FPGAs.

FAQ

What is the primary function of the TPS51513EVM-549?

The TPS51513EVM-549 is an evaluation module-not a production component-that demonstrates the TPS51513 synchronous buck controller in a fully assembled, test-ready configuration. It enables engineers to validate performance metrics including efficiency, load/line regulation, transient response, and loop stability under real-world conditions before committing to custom board design. The TPS51513EVM-549 includes all necessary passive components, MOSFETs, and configuration jumpers to replicate a typical single-phase VCORE application.

How do I configure the TPS51513EVM-549 for 1.2-V fixed output?

To set the TPS51513EVM-549 to 1.2-V fixed output, remove the jumper from J10 (VOUT selection). With no jumper installed, the EVM bypasses the 3-bit VID DAC and routes 1.2 V directly to the output. Confirm operation by measuring TP5 (VOUT) with a voltmeter while the controller is enabled (J6 jumper removed). Note that VID bits (S1) and frequency (J7) jumpers remain inactive in this mode, and the 1.2-V option is independent of OSR™ or current limit settings.

What test points are critical for measuring current monitor (IMON) performance on the TPS51513EVM-549?

TP6 (IMON) is the dedicated current monitor output test point on the TPS51513EVM-549, referenced to TP7 or TP8 (GND). Its voltage scales linearly with output current-e.g., ~100 mV/A-enabling real-time load monitoring without intrusive shunt resistors. For accurate measurement, use a high-impedance voltmeter (≥1 MΩ) and verify calibration against known load currents (e.g., 5 A, 10 A, 20 A) per Figure 7-4 in the User's Guide. Avoid grounding errors by using TP8 as the local ground reference for the probe.

Does the TPS51513EVM-549 require forced airflow during operation?

Yes-the TPS51513EVM-549 requires active cooling: a fan delivering 200–400 LFM airflow across the board is mandatory during operation above 5 A. Without forced airflow, MOSFETs (Q1–Q3) and inductor L1 can exceed 60°C, risking thermal shutdown or measurement drift. The User's Guide explicitly states the EVM must not be probed if the fan is off. This requirement reflects the high-current density design and validates thermal performance under realistic lab conditions.

Can the TPS51513EVM-549 be used to evaluate loop stability and compensation?

Yes-the TPS51513EVM-549 supports direct loop gain measurement via CHA (TP19) and CHB (TP9), which provide injection and return points for network analyzer-based Bode plot analysis. Figure 7-10 shows the measured open-loop gain/phase response at 12 V_IN, 1.05 V/17 A. Users can modify compensation components (e.g., R/C on U1 pins) and re-measure to validate stability margins (e.g., ≥45° phase margin), making the TPS51513EVM-549 suitable for control loop optimization prior to custom design.