Texas Instruments TPS548B27EVM-162

Overview

TPS548B27EVM-162 from Texas Instruments is a fully assembled, tested evaluation module designed to demonstrate the performance and configuration flexibility of the TPS548B27 20-A synchronous buck converter. It supports input voltage range of 4 V to 16 V, delivers up to 20 A at adjustable output voltages (default 1.0 V), and features D-CAP3™ control topology with no external compensation required.

For engineers reviewing the TPS548B27EVM-162 datasheet, TPS548B27EVM-162 layout, TPS548B27EVM-162 schematic, or TPS548B27EVM-162 modification options, this EVM enables rapid validation of high-current DC/DC design parameters including switching frequency (600–1000 kHz), operation mode (skip or forced CCM), remote sensing, adjustable UVLO, and soft-start behavior in real-world thermal and load-transient conditions.

Technical Context

The TPS548B27EVM-162 implements a complete reference design for the TPS548B27 IC, integrating dual-side 2-oz copper layers, dedicated analog ground isolation, and optimized power trace routing for low-noise, high-efficiency operation. Its layout includes VIN/VOUT/SW power planes on top layer, internal ground planes on Layer 1 and Layer 2, and bottom-layer signal routing with test point access.

Configuration is enabled via physical jumpers and resistor networks: J4 selects switching frequency and light-load mode using six discrete resistor-to-AGND connections; J3 controls EN pin biasing (VIN, floating, or PGND); R8/R9 adjust output voltage via feedback divider; R2/R9 set external UVLO threshold; and R10/R14 enable remote sensing by replacing with 100-Ω resistors.

Key Specifications

Availability

TPS548B27EVM-162 is available at Aetrix Electronics and suitable for high-current power supply validation, DC/DC converter reference design verification, and D-CAP3™ control topology evaluation requiring stable component supply and documented layout practices.

Supply support for TPS548B27EVM-162 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 electronic systems.

The TPS548B27EVM-162 belongs to TI's Power Management Evaluation Module product line, engineered to accelerate development of high-efficiency, high-current buck converters for server, telecom, and FPGA/ASIC power applications.

FAQ

What is the primary function of the TPS548B27EVM-162?

The TPS548B27EVM-162 is an evaluation module designed exclusively to demonstrate and validate the electrical, thermal, and layout performance of the TPS548B27 20-A synchronous buck converter IC. It provides immediate access to all configurable features-including output voltage, switching frequency, operation mode, remote sensing, and UVLO-without requiring custom PCB design. Engineers use the TPS548B27EVM-162 to verify system-level behavior before committing to production hardware.

Does the TPS548B27EVM-162 require external compensation components?

No, the TPS548B27EVM-162 does not require external compensation components because it implements the TPS548B27 IC's integrated D-CAP3™ control architecture. This topology embeds loop compensation within the IC, eliminating the need for external RC networks while maintaining stability across input/output variations and load transients. The TPS548B27EVM-162 validates this feature out-of-the-box with its default 1.0-V output configuration.

How is output voltage adjusted on the TPS548B27EVM-162?

Output voltage on the TPS548B27EVM-162 is adjusted by modifying the feedback resistor divider formed by R8, R9, and R13 (fixed 10 kΩ). Using Equation 1 from the user guide-V_OUT = V_INTREF × (R8 + R9)/R13, where V_INTREF = 0.6 V-the designer calculates new R8/R9 values to achieve the desired setpoint above 0.6 V. The TPS548B27EVM-162 includes test points (TP4) at the regulation point to ensure accurate remote-sense-capable adjustment.

Can the TPS548B27EVM-162 operate outside the 8–14 V input range specified in Table 4-1?

Yes, the TPS548B27EVM-162 is designed and tested for 8–14 V per Table 4-1, but the underlying TPS548B27 IC supports 4–16 V input, and the EVM can be modified to operate across that full range. Input capacitors (C6, C15, C18) and layout are rated for 16 V, and the user guide explicitly states "The design can be modified to perform over 4 V to 16 V." Thermal and efficiency validation beyond 14 V requires user-level testing under actual load conditions.

What layout features make the TPS548B27EVM-162 suitable for high-current evaluation?

The TPS548B27EVM-162 uses 2-oz copper on all four layers to minimize IR drop and thermal resistance, with dedicated top-layer power traces for VIN, VOUT, and SW, plus isolated analog ground islands connected at a single point. Internal Layer 1 and Layer 2 provide extensive ground planes, while the bottom layer adds VOUT fill and signal routing. Critical components-including input decoupling caps, bootstrap cap, and feedback resistors-are placed adjacent to U1 (TPS548B27RYLT) to reduce parasitic inductance and improve transient response.