Texas Instruments TPS548D22EVM-784

Overview

TPS548D22EVM-784 from Texas Instruments is an evaluation module designed to demonstrate the TPS548D22 40-A synchronous step-down converter in a 1-V output, high-current DC-DC application. It operates from a 5–16-V input, delivers up to 40 A steady-state load, and features PMBus interface support, remote sensing, and thermal monitoring for enterprise server and FPGA core rail validation.

For engineers reviewing the TPS548D22EVM-784 datasheet, TPS548D22EVM-784 test points, TPS548D22EVM-784 efficiency curves, or TPS548D22EVM-784 layout files, this EVM provides validated measurement access to switching node (TP5), control signals (TP4, TP16), power-good (TP8), and remote sense paths (TP3, TP11) - enabling precise line/load regulation, ripple, transient, and thermal characterization per SLUUBE4B.

Technical Context

The TPS548D22EVM-784 implements the TPS548D22 IC in a single-output, fixed 1-V configuration using external resistor dividers for MODE, VSEL, and FSEL programming. It supports PMBus communication via CLK/DATA/ALERT pins and includes dedicated test points for local (TP2/TP10) and remote (TP3/TP11) output sensing to isolate PCB trace losses during efficiency testing.

Thermal management relies on 2-oz copper layers across all six PCB planes, with measured junction temperatures staying below 105°C at 40-A load and 12-V input. The board uses a 250-nH shielded drum-core inductor (Wurth 744309025), 470-µF polymer tantalum output capacitors (Panasonic 2R5TPF470M6L), and 100-µF ceramic bulk capacitance (Murata GRM32ER60J107ME20) to meet tight 10-mV_PP ripple spec at full load.

Key Specifications

Availability

TPS548D22EVM-784 is available at Aetrix Electronics and suitable for enterprise server power validation, FPGA core rail prototyping, and high-density telecom DC-DC development requiring stable component supply and documented thermal performance.

Supply support for TPS548D22EVM-784 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 over 90 years of innovation in high-reliability power conversion solutions.

The TPS548D22EVM-784 belongs to TI's SWIFT™ high-current DC-DC evaluation platform family, engineered to accelerate design-in of 20–60-A point-of-load converters for datacenter, networking, and AI acceleration applications.

FAQ

What is the primary function of the TPS548D22EVM-784?

The TPS548D22EVM-784 is a fully assembled evaluation module that demonstrates the TPS548D22 40-A synchronous buck converter in a 1-V output configuration. It enables engineers to validate electrical performance-including efficiency, transient response, ripple, and thermal behavior-under real-world conditions using standardized test points and documented procedures in the SLUUBE4B user's guide.

Which input voltage range does the TPS548D22EVM-784 support?

The TPS548D22EVM-784 supports an input voltage range of 5 V to 16 V, as verified in Table 3-1 of the SLUUBE4B user's guide. This range accommodates common intermediate bus voltages used in enterprise servers and networking equipment, with peak input current limited to 12 A at 12-V input and 40-A output.

How is output voltage accuracy maintained on the TPS548D22EVM-784?

Output voltage accuracy on the TPS548D22EVM-784 is maintained through dual-sensing architecture: local sensing at C5 (TP2/TP10) for ripple and efficiency measurements, and remote sensing (TP3/TP11) to compensate for IR drop across PCB traces and connectors. Line and load regulation are both specified at ±0.5%, ensuring stability across full input and output operating ranges.

Does the TPS548D22EVM-784 support PMBus communication?

Yes, the TPS548D22EVM-784 exposes PMBus interface signals (CLK, DATA, ALERT) on header J4 and test points TP20–TP22, enabling readback of telemetry such as input/output voltage, current, temperature, and fault status. Though not actively configured by default, the hardware layout and pinout align with TI's PMBus-compliant implementation for the TPS548D22 IC.

What thermal performance can be expected from the TPS548D22EVM-784 at full load?

At 12-V input and 40-A output, the TPS548D22EVM-784 achieves thermal equilibrium with maximum device temperature below 105°C when operated with forced-air cooling, as confirmed by the thermal image in Figure 9-10 of SLUUBE4B. The 2-oz copper PCB stack-up and optimized thermal vias under the TPS548D22 RVF package ensure reliable operation within industrial temperature limits.