Texas Instruments TPS40077EVM-001

Overview

TPS40077EVM-001 from Texas Instruments is an evaluation module for the TPS40077 synchronous buck controller, configured as a fixed 1.8-V, 10-A output converter operating from an 8–16-V input bus. It implements predictive gate drive to eliminate shoot-through current and minimize synchronous rectifier reverse conduction time, enabling high-efficiency point-of-load regulation in networking and telecom power systems.

For engineers reviewing the TPS40077EVM-001 datasheet, TPS40077EVM-001 test setup, TPS40077EVM-001 transient response, or TPS40077EVM-001 loop gain measurement, this page delivers verified electrical specifications, layout-aware performance data, and application-specific configuration guidance for rapid validation of 12-V-to-1.8-V DC/DC designs.

Technical Context

The TPS40077EVM-001 implements a non-isolated synchronous buck topology using a single main N-channel MOSFET (Si7860DP) and a single synchronous rectifier N-channel MOSFET (Si7886ADP), both in PowerPAK SO-8 packages. Its control loop operates at 300 kHz nominal switching frequency with measured crossover at 30.7 kHz and 52.5° phase margin under 12-V input and 10-A load conditions.

Input UVLO is set at 6 V (5.4–6.6 V range), ON threshold at 7 V (6.3–7.7 V), and output voltage accuracy is ±2.8% (1.75–1.85 V) over line and load. The board supports output adjustment from 0.9 V to 3.3 V via resistor divider R3/R13, though stability and efficiency are optimized for the default 1.8-V configuration.

Key Specifications

Availability

TPS40077EVM-001 is available at Aetrix Electronics and suitable for networking equipment, telecommunications infrastructure, and DC-power distributed systems requiring stable component supply, repeatable lab validation, and fast-turnaround power stage characterization.

Supply support for TPS40077EVM-001 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 power conversion reference designs and evaluation platforms.

The TPS40077EVM-001 belongs to TI's buck controller evaluation module product line, designed specifically to accelerate development of high-current, low-voltage point-of-load supplies using predictive gate drive architecture.

FAQ

What is the primary function of the TPS40077EVM-001?

The TPS40077EVM-001 is a fully assembled evaluation module that demonstrates the TPS40077 synchronous buck controller in a practical 12-V-to-1.8-V, 10-A power stage. It provides accessible test points, configurable feedback, and disable functionality to validate efficiency, transient response, and loop stability-enabling rapid prototyping without custom PCB design. The TPS40077EVM-001 is not a production power supply but a characterization tool for system-level integration.

Can the TPS40077EVM-001 be used to evaluate other output voltages?

Yes-the TPS40077EVM-001 supports output voltage adjustment from 0.9 V to 3.3 V by changing R3 and R13 per Table 3-1. However, the power stage components (inductor, MOSFETs, output capacitors) are optimized for 1.8 V; operation outside this range may reduce efficiency or stability margins. The TPS40077EVM-001 remains functional but requires verification of loop compensation and thermal performance at alternate settings.

How is the enable/disable function implemented on the TPS40077EVM-001?

The TPS40077EVM-001 implements enable/disable via jumper J3: shorting its pins disables the TPS40077 controller, turning off both high-side and low-side FET drivers. This allows safe shutdown during testing and evaluation of startup sequencing, fault recovery, and system-level power management. The TPS40077EVM-001 does not include external logic-level enable circuitry-J3 is a manual hardware control interface.

What test equipment is required to measure control-loop gain and phase on the TPS40077EVM-001?

To measure control-loop gain and phase on the TPS40077EVM-001, you need a network analyzer or oscilloscope with dual-channel amplitude/phase capability, a 1-kHz–1-MHz isolation transformer, and probes connected to TP3 (input injection) and TP6 (output response), with grounds referenced to TP8. The TPS40077EVM-001 includes dedicated test points and layout provisions to minimize noise and ensure accurate small-signal measurements without soldering or modification.

What are the physical dimensions and layout features of the TPS40077EVM-001?

The TPS40077EVM-001 is a double-sided, 2-oz copper PCB measuring 1.0 inch × 2.4 inches (active area), with all components placed on the top side for unobstructed probing and visual inspection. Its compact footprint and exposed power-stage nodes-including TP9/TP10 for ripple measurement and TP3/TP6 for loop analysis-make the TPS40077EVM-001 ideal for benchtop validation of high-current buck converters in space-constrained applications.