Texas Instruments LMZM33602EVM

Overview

LMZM33602EVM from Texas Instruments is an evaluation module designed to facilitate comprehensive performance and feature assessment of the LMZM33602 synchronous buck power module. It supports 4–36 V input, offers jumper-selectable output voltages (2.5 V, 3.3 V, 5.0 V, 12 V) and switching frequencies (250 kHz to 900 kHz), delivers full-rated output current, and includes integrated test points for efficiency, ripple, regulation, and transient response measurement.

For engineers reviewing the LMZM33602EVM datasheet, LMZM33602EVM pinout, LMZM33602EVM application, or LMZM33602EVM equivalent, this EVM provides direct access to EN, UVLO, PGOOD, SYNC, and feedback control signals; supports oscilloscope-based waveform analysis via dedicated VIN/VOUT scope test points; and enables rapid validation of thermal layout, input/output capacitor selection, and system-level power integrity under real load conditions.

Technical Context

The LMZM33602EVM implements a complete reference design for the LMZM33602 B2QFN-18 power module, featuring a recommended PCB stack-up with optimized thermal vias and low-inductance power planes. It integrates all required input (4.7 µF ×2 + 47 µF) and output (22 µF ×4) capacitance for stable operation across the full 4–36 V input range and selected output voltages.

Control interface test points expose EN (100 kΩ pull-up to VIN), SYNC (AC-coupled via 1000 pF with 49.9 Ω termination to PGND), PGOOD (open-drain with 5.1 V zener clamp), and UVLO adjustment resistors (R9/R16). Jumper-based configuration (J5/J6) enables deterministic setup of f_SW and V_OUT without soldering, aligning with TI's validated design guidelines for industrial and embedded DC/DC conversion.

Key Specifications

Availability

LMZM33602EVM is available at Aetrix Electronics and suitable for industrial power supply validation, embedded DC/DC converter prototyping, and automotive subsystem testing requiring stable component supply, traceable sourcing, and documented thermal/mechanical reference designs.

Supply support for LMZM33602EVM 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 high-reliability electronic systems.

The LMZM33602EVM belongs to TI's modular power module evaluation platform family, engineered to accelerate development of compact, thermally robust, and noise-optimized point-of-load regulators for space-constrained industrial, test equipment, and communications applications.

FAQ

What is the primary function of the LMZM33602EVM?

The LMZM33602EVM is an evaluation module that enables engineers to rapidly assess the electrical performance, thermal behavior, and feature set of the LMZM33602 synchronous buck power module. It provides pre-populated, layout-optimized circuitry-including input/output capacitors, feedback networks, and signal test points-to validate efficiency, ripple, regulation, transient response, and control interface functionality without custom PCB design. The LMZM33602EVM serves as a turnkey reference for integrating the LMZM33602 into end systems.

How do I configure the output voltage on the LMZM33602EVM?

Output voltage on the LMZM33602EVM is configured using the VOUT SELECT jumper (J6), which connects internal resistor dividers to set 2.5 V, 3.3 V, 5.0 V, or 12 V. Table 1 in the SNVU565 User's Guide specifies exact jumper positions for each voltage. Before applying power, ensure J6 is correctly installed; changing settings requires power removal. For non-standard voltages, J6 is left open and external RFBT/CFF components (R2/C18 footprints) must be populated per LMZM33602 datasheet calculations.

Does the LMZM33602EVM support synchronization to an external clock?

Yes, the LMZM33602EVM supports external clock synchronization via the SYNC test point (labeled "SYNC" on the board). It features AC coupling through a 1000 pF capacitor (C17) and a 49.9 Ω termination resistor (R17) to PGND, matching the LMZM33602's SYNC pin requirements. An external clock signal applied here synchronizes the LMZM33602's switching frequency, enabling noise reduction in multi-rail systems. This functionality is fully accessible and validated on the LMZM33602EVM without modification.

What test points are available for measuring efficiency and ripple on the LMZM33602EVM?

The LMZM33602EVM provides dedicated test points for precision measurement: VIN S+ and VIN S− for input voltage monitoring with a DVM; VOUT S+ and VOUT S− for output voltage monitoring; VIN Scope (J3) and VOUT Scope (J4) for oscilloscope-based ripple and transient analysis. These points are routed with low-inductance paths and include ground-spring-compatible 0.1-inch spaced sockets. All measurements reflect actual operating conditions of the LMZM33602 under load, enabling accurate efficiency and ripple characterization per JEDEC standards.

Can the LMZM33602EVM be used to evaluate both LMZM33602 and LMZM33603 devices?

No - the LMZM33602EVM is specifically configured for the LMZM33602 device (U1 = LMZM33602RLR in BOM Table 3). While it shares identical mechanical layout and jumper-based configuration with the LMZM33603EVM, the two EVMs differ in populated components: the LMZM33602EVM uses the LMZM33602 power module, whereas the LMZM33603EVM uses the LMZM33603. Each EVM is calibrated and validated for its respective device's current rating, thermal profile, and parameter limits. Using the LMZM33602EVM with an LMZM33603 is not supported or characterized.