Texas Instruments LMZ22010EVAL/NOPB

Overview

LMZ22010EVAL/NOPB from Texas Instruments is an evaluation board for the LMZ22010 10A SIMPLE SWITCHER® power module, designed to validate current-sharing operation of up to four parallel modules delivering up to 40 A. It supports input voltage ranges of 6 V to 20 V, configurable output voltages of 1.2 V, 2.5 V, 3.3 V or 5 V, and features onboard 555-based synchronization (350–600 kHz), Kelvin sensing, and UVLO adjustment - used in high-current industrial power supply validation.

For engineers reviewing the LMZ22010EVAL/NOPB datasheet, LMZ22010EVAL/NOPB pinout, LMZ22010EVAL/NOPB application, or LMZ22010EVAL/NOPB equivalent, this board enables rapid assessment of multi-module DC-DC current sharing, thermal performance, startup into pre-biased loads, and synchronized vs. phase-shifted operation under real load conditions.

Technical Context

The LMZ22010EVAL/NOPB implements a 44-pin edge connector interface with dedicated VIN, VOUT, GND, SYNC, EN, SHARE, and Kelvin sense terminals to support precise measurement and inter-module coordination. It integrates a programmable LMC555CM timer for master clock generation and supports both master-slave and external synchronization modes via jumper J3.

Board-level design includes four-layer FR4 construction (2 oz copper on all layers), 90 mm × 90 mm footprint, and provisions for temperature monitoring (via RTS resistor), soft-start timing (CSS capacitor), and output voltage selection (jumper J1). It is explicitly intended for R&D use-not production deployment-per TI's EVM terms.

Key Specifications

Availability

LMZ22010EVAL/NOPB is available at Aetrix Electronics and suitable for industrial power system validation, multi-rail DC-DC architecture prototyping, and high-current load testing requiring stable component supply and traceable evaluation hardware.

Supply support for LMZ22010EVAL/NOPB 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 50 years of innovation in industrial, automotive, and communications markets.

The LMZ22010EVAL/NOPB belongs to TI's SIMPLE SWITCHER® evaluation platform family, developed specifically to accelerate design-in of integrated power modules by enabling fast, repeatable validation of current sharing, thermal behavior, and dynamic response in multi-module configurations.

FAQ

What is the primary function of the LMZ22010EVAL/NOPB?

The LMZ22010EVAL/NOPB is a current-sharing evaluation board for the LMZ22010 10A power module. It enables engineers to test and validate parallel operation of up to four LMZ22010 modules delivering up to 40 A total output current. Its design includes synchronization circuitry, Kelvin sensing, and configurable output voltage selection - all focused on accelerating power architecture development, not end-product deployment.

Does the LMZ22010EVAL/NOPB support both LMZ22010 and LMZ23610 modules?

No. The LMZ22010EVAL/NOPB is specifically configured for the LMZ22010 family (6–20 V input range). While the board's schematic and layout accommodate both LMZ220xx and LMZ236xx modules per documentation, its default component selection - including input capacitors and UVLO divider - is optimized for 6–20 V operation. Using it with LMZ23610 (6–36 V) requires verification of input-stage stress and may need component changes.

How is output voltage selected on the LMZ22010EVAL/NOPB?

Output voltage on the LMZ22010EVAL/NOPB is set using jumper J1, which selects between 1.2 V, 2.5 V, 3.3 V, or 5 V by configuring the feedback resistor network. Each voltage option uses a dedicated pair of top/bottom resistors (e.g., RFBT_1.2/RFBT_1.2b for 1.2 V). For non-standard voltages, the feedback resistors must be manually replaced per the LMZ22010 datasheet equations - no onboard trimmer or digital interface is provided.

Can the LMZ22010EVAL/NOPB operate without the onboard 555 timer?

Yes. Jumper J3 (SLAVE) disables the onboard LMC555CM timer, allowing external synchronization signals (314–600 kHz CMOS square wave) to be applied via the SYNC+ and SYNC− terminals. When J3 is installed, the 555 is disabled on both master and slave boards - a requirement for clean external clock injection. This mode supports multiphase timing and custom clock tree integration.

What thermal measurement capability does the LMZ22010EVAL/NOPB provide?

The LMZ22010EVAL/NOPB includes a surface-mount 100 Ω NTC thermistor (Rts) connected between TEMP SENSE and VIN SENSE−. Measuring resistance across these pins allows temperature calculation using the equation: Temperature (°C) ≈ 2.6245 × Resistance (Ω) − 262.7. This provides direct board-temperature feedback during thermal derating and current-sharing stability tests - no external sensor interface is required.