Texas Instruments TPS84259EVM-001

Overview

TPS84259EVM-001 from Texas Instruments is an evaluation module designed to accelerate development and validation of the TPS84259 integrated power solution - a non-synchronous buck-boost converter delivering up to 2 A at negative output voltages from –3.3 V to –15 V, operating from 4.5 V to 40 V input, with fixed 800 kHz switching frequency and jumper-selectable output voltage.

For engineers reviewing the TPS84259EVM-001 datasheet, TPS84259EVM-001 pinout, TPS84259EVM-001 application, or TPS84259EVM-001 equivalent, this EVM provides direct access to test points for efficiency, ripple, soft-start, UVLO, line/load regulation, and transient response - enabling rapid characterization without custom PCB design.

Technical Context

The TPS84259EVM-001 implements the TPS84259RKG QFN-41 IC in a fully assembled, tested configuration optimized for negative-output DC/DC conversion. It supports four preset output voltages (–3.3 V, –5 V, –12 V, –15 V) via jumper J3 and includes dedicated test points for VIN, –VOUT, PH (switching node), SS (soft-start), INH/UVLO, and GND.

Input voltage range is 4.5 V to 40 V, with maximum VIN constrained by selected VOUT per Table 1 (e.g., 35 V max at –15 V output). The board uses a recommended thermal layout, minimal onboard capacitance (4.7 µF ×2 input, 22 µF ×4 output), and provisions for additional capacitors at C4, C5, and C10 locations.

Key Specifications

Availability

TPS84259EVM-001 is available at Aetrix Electronics and suitable for power supply validation, embedded system prototyping, and industrial DC/DC design requiring stable component supply, fast turnaround, and TI-qualified reference hardware.

Supply support for TPS84259EVM-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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management technologies with over 90 years of innovation in electronics design tools and reference solutions.

The TPS84259EVM-001 belongs to TI's Integrated Power Solution (IPS) evaluation platform family, engineered to simplify adoption of high-efficiency, compact DC/DC converters for space-constrained and thermally demanding applications.

FAQ

What is the primary function of the TPS84259EVM-001?

The TPS84259EVM-001 is an evaluation module built around the TPS84259RKG integrated buck-boost converter. Its primary function is to provide a ready-to-use platform for evaluating the performance, stability, and design margins of the TPS84259 in negative-output power supply applications - including efficiency measurement, ripple analysis, and transient response testing without custom PCB development.

Can the TPS84259EVM-001 generate positive output voltages?

No. The TPS84259EVM-001 is configured exclusively for negative output voltages (–3.3 V, –5 V, –12 V, or –15 V) as defined by the underlying TPS84259 device architecture. The board does not support positive output configurations; it lacks the component layout, feedback topology, or pin routing needed for positive-output operation.

How do I change the output voltage on the TPS84259EVM-001?

Output voltage is set using jumper J3, a 2×4-pin header located near the output terminal block TB2. Install the shunt across the appropriate pair of pins per Table 1 in the SLVU748 user guide (e.g., pins 1–2 for –3.3 V). Always power down before repositioning the shunt, and verify VIN + |VOUT| ≤ 50 V before applying input power.

Does the TPS84259EVM-001 include a clock input interface?

No. The CLK input pin (pin 31) of the TPS84259RKG IC is not brought out to any test point, header, or connector on the TPS84259EVM-001. The board operates at its factory-set switching frequency (800 kHz) and does not support external clock synchronization or frequency modulation via the CLK pin.

What safety precautions apply when using the TPS84259EVM-001?

Users must observe ESD handling protocols, avoid exceeding 50 V total (VIN + |VOUT|), and never connect loads directly to test points TP1–TP2 - those are for metering only. The board is not FCC/ICES-certified for end-product use and is intended solely for lab-based engineering evaluation under controlled conditions per TI's Warnings and Restrictions notice.