Texas Instruments TPS53319EVM-136

Overview

TPS53319EVM-136 from Texas Instruments is an evaluation module designed to demonstrate the TPS53319 14-A synchronous buck converter in a low-voltage application, delivering a regulated 1.5-V output from an 8–20-V input bus with up to 14 A load current, peak efficiency of 91.68%, and 500-kHz default switching frequency for server, workstation, and telecom power delivery validation.

For engineers reviewing the TPS53319EVM-136 datasheet, TPS53319EVM-136 test setup, TPS53319EVM-136 performance curves, or TPS53319EVM-136 jumper configuration options, this EVM provides accessible measurement points (TP1–TP12), configurable mode selection (auto-skip vs. forced CCM), soft-start timing, switching frequency tuning, and pre-bias start-up verification under real-world thermal and transient conditions.

Technical Context

The TPS53319EVM-136 implements the TPS53319 D-CAP™ control-mode synchronous buck converter on a 6-layer, 2-oz copper PCB with integrated MOSFETs, supporting 1.5-V fixed output at up to 14 A with ±1% load regulation and 0.1% line regulation across 8–20 V input. It features configurable operation via four jumpers (J3–J6) for switching frequency (250–970 kHz), soft-start time (0.7–5.6 ms), MODE (auto-skip or forced CCM), and enable control.

Test points TP1–TP12 provide direct access to VIN, VOUT, PGOOD, EN, switching node (LL), feedback loop injection points (TP6/TP7), and multiple ground references (TP9–TP12), enabling full characterization of efficiency, ripple (15 mVpp max), transient response, Bode plot analysis, and thermal performance (measured at 25°C ambient without airflow).

Key Specifications

Availability

TPS53319EVM-136 is available at Aetrix Electronics and suitable for server/storage power validation, telecom infrastructure DC-DC design verification, and workstation embedded power architecture development requiring stable component supply and repeatable lab evaluation platforms.

Supply support for TPS53319EVM-136 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 high-performance power conversion ICs and reference designs.

The TPS53319EVM-136 belongs to TI's evaluation module product line for high-current DC-DC converters, engineered specifically to accelerate design-in and validation of the TPS53319 in demanding low-voltage, high-current applications like CPU/GPU core supplies and memory subsystems.

FAQ

What is the primary function of the TPS53319EVM-136?

The TPS53319EVM-136 is an evaluation module built around the TPS53319 14-A synchronous buck converter, intended to demonstrate and validate its performance in real-world low-voltage power delivery applications. It delivers a fixed 1.5-V output from an 8–20-V input, supports pre-bias start-up, and provides comprehensive test points and jumper-based configuration for engineering evaluation. The TPS53319EVM-136 enables rapid prototyping and characterization of transient response, efficiency, thermal behavior, and loop stability without custom PCB design.

Which input voltage range does the TPS53319EVM-136 support?

The TPS53319EVM-136 supports an input voltage range of 8 V to 20 V, as specified in its electrical performance table and verified across line regulation testing. This range accommodates standard 12-V intermediate bus systems and allows margin testing up to 20 V for robustness validation. Input current is rated up to 2.874 A at 8 V/14 A output, and no-load input current is 0.7 mA at 20 V with auto-skip mode enabled - all measured with jumpers in default configuration per the User's Guide.

How is switching frequency configured on the TPS53319EVM-136?

Switching frequency on the TPS53319EVM-136 is configured using jumper J3, which selects one of seven resistor values (0 Ω to 866 kΩ) to set frequencies from 250 kHz to 970 kHz. The default setting (pins 7–8 open) yields 500 kHz. Each configuration is documented in Table 5-1 of the User's Guide, and the selected frequency directly impacts efficiency trade-offs, inductor size, and EMI profile - making J3 a key tuning point for optimizing the TPS53319EVM-136 for specific application constraints.

Does the TPS53319EVM-136 support pre-bias start-up, and how is it verified?

Yes, the TPS53319EVM-136 supports pre-bias start-up, verified in Figure 7-11 of the User's Guide showing successful turn-on with a 0.75-V pre-biased output. This capability is inherent to the underlying TPS53319 controller and requires no additional hardware modification on the EVM. Pre-bias operation ensures safe power sequencing in multi-rail systems where downstream circuitry may retain residual voltage, preventing reverse current flow or latch-up - a critical feature for DDR memory and FPGA core supply validation using the TPS53319EVM-136.

What test points are provided on the TPS53319EVM-136 for loop stability analysis?

The TPS53319EVM-136 provides dedicated test points TP6 (CHA) and TP7 (CHB) in the feedback path, with a 10-Ω series resistor inserted for Bode plot measurement. As described in Section 6.2, these points allow injection of a small-signal stimulus (≤20 mV) via an isolation transformer to measure control loop gain and phase margin across 100 Hz–1 MHz. TP9 serves as the common ground reference for both channels. This setup enables direct empirical validation of compensation network stability - a key step when adapting the TPS53319EVM-136 reference design to custom output capacitance or load conditions.