Texas Instruments TPS62840-1DLCEVM55

Overview

TPS62840-1DLCEVM55 from Texas Instruments is an evaluation module designed to validate the TPS62840DLC 750-mA, 60-nA quiescent current step-down converter in a 1.5-mm × 2-mm QFN package. It supports input voltages from 1.8 V to 6.5 V and delivers a fixed 1.8-V output at up to 750 mA, enabling ultra-low-power system validation for battery-operated IoT and metering applications.

For engineers reviewing the TPS62840-1DLCEVM55 datasheet, TPS62840-1DLCEVM55 board layout, TPS62840-1DLCEVM55 test results, or TPS62840-1DLCEVM55 schematic and BOM, this EVM provides direct access to performance data-including thermal behavior, loop response, and load transient response-under real-world operating conditions with configurable EN, MODE, and STOP control.

Technical Context

The TPS62840-1DLCEVM55 implements two independent sub-circuits on a single PCB: one populated with U11 (TPS62840DLC) delivering 1.8 V, and another with U21 (TPS62841DLC) delivering 1.2 V. Each circuit uses DCS-Control™ topology and supports selectable output voltage ranges via resistor dividers Rx1/Rx4.

It enables full functional and dynamic characterization including loop response measurement (via trace cut and 10-Ω injection resistor), thermal performance evaluation (measured at VIN = 3.6 V, VOUT = 1.8 V, IOUT = 750 mA), and mode switching between forced PWM and PFM/PWM auto-transition using JPx2.

Key Specifications

Availability

TPS62840-1DLCEVM55 is available at Aetrix Electronics and suitable for IoT sensor node development, smart meter reference design validation, and ultra-low-power building automation subsystem testing requiring stable component supply and repeatable evaluation infrastructure.

Supply support for TPS62840-1DLCEVM55 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 and embedded processing technologies, with leadership in power management, signal chain, and high-reliability solutions.

The TPS62840-1DLCEVM55 belongs to TI's precision low-power DC/DC evaluation platform line, engineered to accelerate adoption of ultra-low-IQ buck converters in energy-constrained edge devices.

FAQ

What is the primary function of the TPS62840-1DLCEVM55?

The TPS62840-1DLCEVM55 is an evaluation module used to characterize and validate the electrical and thermal performance of the TPS62840DLC step-down converter. It provides a ready-to-use platform with test points, configurable jumpers, and documented measurement procedures-enabling engineers to verify efficiency, transient response, loop stability, and thermal behavior before integrating the TPS62840DLC into final designs.

Which IC does the TPS62840-1DLCEVM55 evaluate?

The TPS62840-1DLCEVM55 evaluates the TPS62840DLC - a 750-mA, 60-nA IQ synchronous buck converter in a 1.5-mm × 2-mm QFN package. The board's U11 position is populated with TPS62840DLC configured for 1.8-V output, while U21 hosts the pin-compatible TPS62841DLC for 1.2-V evaluation.

How do I configure the TPS62840-1DLCEVM55 for different operating modes?

Use jumper JPx2 to select between forced PWM mode (PWM–MODE) and automatic PFM/PWM mode (PFM/PWM–MODE). JPx1 controls enable/disable (ON/OFF–EN), and JPx3 selects RUN or STOP state (RUN–STOP or PAUSE–STOP). These jumpers give direct hardware-level control over the TPS62840DLC's operational behavior without requiring external logic.

Can the output voltage of the TPS62840-1DLCEVM55 be adjusted?

Yes - the TPS62840-1DLCEVM55 supports adjustable output voltage from 1.8 V to 3.3 V on the U11 circuit by replacing resistor Rx4 (0603 footprint) with values matching the desired VOUT. Rx1 (0201) is pre-installed for 1.8 V; removing it and populating Rx4 allows quick reconfiguration without soldering fine-pitch components.

Does the TPS62840-1DLCEVM55 include thermal performance data?

Yes - the TPS62840-1DLCEVM55 User's Guide includes thermal performance measurements for the TPS62840DLC under defined conditions: VIN = 3.6 V, VOUT = 1.8 V, IOUT = 750 mA. Figure 2 documents junction temperature rise and steady-state thermal behavior, supporting thermal design validation for compact, sealed-end applications like smart meters and wireless sensors.