Texas Instruments TPS40055EVM-002

Overview

TPS40055EVM-002 from Texas Instruments is an evaluation module built around the TPS40055 synchronous buck controller, delivering a regulated 5 V output at up to 3 A (at VIN = 10 V) or 2 A (at VIN = 40 V) across a 10–40 VDC input range. It implements voltage-mode control with feed-forward, external loop compensation, and programmable soft-start, UVLO, and switching frequency - designed for engineering validation of wide-input industrial and embedded power supplies.

For engineers reviewing the TPS40055EVM-002 datasheet, TPS40055EVM-002 test setup, TPS40055EVM-002 transient response, or TPS40055EVM-002 component selection, this page provides verified performance data, layout insights, and application-specific design guidance for rapid prototyping of high-voltage DC/DC converters.

Technical Context

The TPS40055EVM-002 implements a non-isolated synchronous buck topology using the TPS40055PWP controller in a thermally enhanced PWP-16 PowerPAD package. It features user-programmable 300-kHz switching frequency (via RT = 165 kΩ), adjustable UVLO startup/shutdown thresholds (9.2 V / 8.5 V), and voltage-mode closed-loop regulation with feed-forward compensation.

Key design elements include a 22 µH output inductor, dual-MOSFET SO-8 Si4946EY half-bridge, 330 µF POSCAP + 1 µF ceramic output capacitance, and a 100 µF aluminum + 1.5 µF ceramic input filter to suppress dV/dt-induced overshoot. Transient response shows ≤30 mV deviation under 2-A load steps at VIN = 24 V.

Key Specifications

Availability

TPS40055EVM-002 is available at Aetrix Electronics and suitable for industrial power supply validation, embedded system bring-up, and DC/DC converter reference design development requiring stable component supply and documented test methodology.

Supply support for TPS40055EVM-002 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 electronic systems.

The TPS40055EVM-002 belongs to TI's evaluation module product line, developed specifically to accelerate design-in of the TPS4005x family of wide-input synchronous buck controllers for high-reliability industrial and telecom power applications.

FAQ

What is the primary function of the TPS40055EVM-002?

The TPS40055EVM-002 is an evaluation module that demonstrates the operation of the TPS40055 synchronous buck controller. It converts 10–40 VDC input to a regulated 5 V output, supporting up to 3 A at low input voltage and 2 A at maximum input. Its purpose is engineering validation-not end-product deployment-and includes test points, component-level access, and documented performance metrics per SLUU190.

Does the TPS40055EVM-002 include the TPS40055PWP controller IC?

Yes, the TPS40055EVM-002 integrates the TPS40055PWP controller IC in TI's thermally enhanced PWP-16 PowerPAD package (U1 on schematic). This IC provides gate drive for both high-side and low-side N-channel MOSFETs, programmable UVLO, soft-start, and external loop compensation-fully implemented on the HPA071 PCB.

What are the key safety and operational limits for the TPS40055EVM-002?

The TPS40055EVM-002 must operate strictly within 10–40 VDC input; exceeding this range risks irreversible damage. Output load must stay within rated current (2–3 A depending on VIN), and users must observe ESD precautions due to exposed circuitry. Component case temperatures may exceed 50°C during normal operation-especially the MOSFETs and current-sense resistor-requiring proper thermal handling per the User's Guide warnings.

Can the TPS40055EVM-002 be used in production systems?

No. The TPS40055EVM-002 is explicitly designated for engineering development or evaluation only. TI states it is not fit for commercial use, lacks full regulatory compliance (e.g., FCC, CE), and omits production-grade safety, EMC, and reliability features. It must not be integrated into finished products or deployed in end-user environments.

Where can I find the schematic and bill of materials for the TPS40055EVM-002?

The complete schematic, PCB layout (top/bottom copper layers), assembly drawing, and detailed bill of materials-including part numbers for C13 (Sanyo 6TPD330M), Q1 (Siliconix Si4946EY), and U1 (TI TPS40055PWP)-are published in Section 3 (Schematic), Section 7 (Assembly Drawing), and Section 8 (List of Materials) of the SLUU190 User's Guide, available on ti.com.