Texas Instruments LM5006EVAL/NOPB

Overview

LM5006EVAL/NOPB from Texas Instruments is a fully assembled, functional evaluation board for the LM5006 constant-on-time (COT) buck regulator IC. It delivers a regulated 5 V output from 6–75 V input, supports up to 500 mA load current, and features synchronous rectification via an onboard Si2328DS MOSFET. Designed for rapid prototyping of wide-input industrial power supplies.

For engineers reviewing the LM5006EVAL/NOPB datasheet, LM5006EVAL/NOPB pinout, LM5006EVAL/NOPB application, or LM5006EVAL/NOPB equivalent, this board enables immediate validation of COT-based 5 V buck conversion across high-voltage industrial inputs, efficiency benchmarking at 94.75% (6 V/100 mA), ripple optimization across three configurations, under-voltage monitoring setup, and multi-output transformer-based extension.

Technical Context

The LM5006EVAL/NOPB implements Texas Instruments' LM5006 controller in a fixed 5 V, 200 kHz nominal switching frequency buck topology using constant-on-time control. On-time varies inversely with input voltage-from ~4.38 µs at 6 V to ~351 ns at 75 V-to maintain stable regulation without external compensation.

It integrates synchronous rectification via the LG output driving a SOT-23 N-channel MOSFET (Si2328DS), eliminating the need for an external gate driver when Qg < 10 nC. The board supports three configurable output ripple modes (Option A/B/C) requiring ≥25 mV_p-p FB ripple for comparator stability.

Key Specifications

Availability

LM5006EVAL/NOPB is available at Aetrix Electronics and suitable for industrial power supply validation, wide-input DC-DC reference design verification, and synchronous buck topology evaluation requiring stable component supply and full documentation support.

Supply support for LM5006EVAL/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 leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability power conversion solutions.

The LM5006EVAL/NOPB belongs to TI's evaluation board product line, engineered specifically to accelerate development of constant-on-time buck regulators for high-input-voltage industrial and automotive auxiliary power applications.

FAQ

What is the primary function of the LM5006EVAL/NOPB evaluation board?

The LM5006EVAL/NOPB evaluation board provides a ready-to-use hardware platform for evaluating the LM5006 constant-on-time buck regulator IC. It delivers a stable 5 V output from 6–75 V input, supports up to 500 mA load current, and incorporates synchronous rectification, under-voltage detection, and configurable output ripple networks-enabling immediate testing of key performance metrics without custom PCB design.

Does the LM5006EVAL/NOPB require external components to operate?

No, the LM5006EVAL/NOPB is fully populated and operational out-of-box. It includes all required passives (C1–C9, R1–R9), the LM5006 controller (U1 in VSSOP-10), synchronous MOSFET (Si2328DS), and 82 µH inductor (L1). Only input power (via J1) and load (via J2/J3) are needed to begin evaluation-no additional components are required for basic 5 V regulation.

How does the LM5006EVAL/NOPB support different output voltage ripple requirements?

The LM5006EVAL/NOPB offers three factory-configurable ripple options. Option A uses only R7 (0 Ω) for lowest cost and ≈51–280 mV_p-p ripple. Option B adds C8 across R5 to reduce ripple to ≈28–159 mV_p-p. Option C removes R7 and adds R8/C6/C7 to achieve <10 mV_p-p by generating precise FB ripple independent of output noise-verified per AN-2050 Section 6.

Can the LM5006EVAL/NOPB be used to generate multiple output voltages?

Yes, the LM5006EVAL/NOPB supports multi-output extension per AN-2050 Section 10. By replacing L1 with a custom transformer and retaining Q1 for synchronous rectification on secondary windings, users can generate isolated or common-ground secondary outputs (e.g., 12 V + dual 5 V). Regulation depends on transformer turns ratio, load balance, and continuous conduction mode maintained by synchronous operation.

What safety and compliance information applies to the LM5006EVAL/NOPB?

The LM5006EVAL/NOPB is a Class A FCC-compliant evaluation module intended for lab use only-not for end-product integration. It carries warnings for high-voltage operation (≤75 V), thermal management at high load, ESD-sensitive handling, and regulatory restrictions: it must be used in shielded environments or under experimental license in Japan, and complies with EU EMC Directive 2014/30/EU for non-domestic settings.