Texas Instruments TPS563257EVM

Overview

TPS563257EVM from Texas Instruments is an evaluation module for the TPS563257 synchronous buck converter IC, configured to deliver 1.05 V at up to 3 A from a 3–17 V input. It implements fixed-frequency continuous conduction mode (FCCM), supports D-CAP3™ control, and features 1.2 MHz switching with low output ripple (10 mV_PP at 3 A) for power validation in embedded and industrial DC/DC design.

For engineers reviewing the TPS563257EVM datasheet, TPS563257EVM pinout, TPS563257EVM application, or TPS563257EVM equivalent, this page provides verified performance data-including efficiency curves at 25°C across 3–17 V input, load/line regulation behavior, transient response to 0.3–2.7 A steps, and board-level layout details-to support rapid prototyping, power stage validation, and comparative analysis against TPS563252EVM.

Technical Context

The TPS563257EVM implements the TPS563257 IC's FCCM operation mode-maintaining constant 1.2 MHz switching frequency under all load conditions-contrasting with the Eco-mode behavior of the TPS563252EVM. Its D-CAP3™ control architecture enables fast transient response without external compensation and is optimized for low-ESR ceramic output capacitors.

Board-level design includes a Wurth 820 nH shielded inductor (744383660082), Murata/TPS563257EVM-specific feedback resistor network (R4 = 7.5 kΩ, R5 = 10 kΩ), and dual-layer 2-oz copper PCB with dedicated ground plane. Input decoupling uses three 10 µF X5R 0805 ceramics placed adjacent to the SOT-563 package.

Key Specifications

Availability

TPS563257EVM is available at Aetrix Electronics and suitable for power validation, DC/DC reference design verification, and comparative buck converter evaluation requiring stable component supply and documented test data.

Supply support for TPS563257EVM 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-efficiency DC/DC conversion.

The TPS563257EVM belongs to TI's D-CAP3™ synchronous buck evaluation platform, designed specifically to accelerate development of compact, high-transient-response power supplies for space-constrained applications such as industrial PLCs, networking equipment, and embedded computing.

FAQ

What is the primary function of the TPS563257EVM?

The TPS563257EVM is a fully assembled evaluation module that demonstrates the performance of the TPS563257 synchronous buck converter IC. It delivers 1.05 V at up to 3 A from a 3–17 V input and is used for validating power stage behavior-including efficiency, transient response, and regulation-prior to custom PCB design. The TPS563257EVM enables direct measurement of key metrics like output ripple, load step recovery, and startup timing without requiring additional circuitry.

How does the TPS563257EVM differ from the TPS563252EVM?

The TPS563257EVM implements FCCM (forced continuous conduction mode), maintaining a constant 1.2 MHz switching frequency across all load conditions, whereas the TPS563252EVM uses Eco-mode with variable frequency at light loads. This difference results in distinct efficiency curves-especially below 0.1 A-and different load transient profiles. Both modules share identical input/output ranges, layout, and component selection except for the feedback resistor values and underlying IC variant.

What input and output connections does the TPS563257EVM support?

The TPS563257EVM uses terminal blocks J1 (VIN, 3–17 V) and J2 (VOUT, 1.05 V) rated for up to 3 A, with 20-AWG wire recommendations. Test points TP2/TP6 monitor VIN and ground; TP3/TP10 monitor VOUT and ground. JP1 controls enable/disable via EN shunt, and JP2 selects PGOOD source. All connectors and test points are documented in Table 4-1 of the SLUUCL4A User's Guide.

Can the output voltage of the TPS563257EVM be adjusted?

Yes-the TPS563257EVM's output voltage is set by resistors R4 (7.5 kΩ) and R5 (10 kΩ) forming a feedback divider. Using Equation 1 from the User's Guide (R4 = R5 × (V_OUT − 0.6 V) / 0.6 V), designers can recalculate and replace R4 to achieve other output voltages between 0.6 V and 10 V. TI recommends 1% tolerance resistors and cautions against excessively high values due to FB input current error and noise susceptibility.

What documentation and resources accompany the TPS563257EVM?

The TPS563257EVM is supported by the SLUUCL4A User's Guide, which includes performance specifications, schematic (Figure 6-1), bill of materials (Table 6-1), layer drawings (Figures 5-1 through 5-5), and test waveforms for efficiency, load/line regulation, startup, shutdown, and transient response. The guide also references the TPS56325x datasheet (SPRS971) for IC-level specifications and application guidance.