Analog Devices Inc./Maxim Integrated MAX20471EVKIT#

Overview

MAX20471EVKIT# from Maxim Integrated is an evaluation kit designed to demonstrate the performance of the MAX20471 high-efficiency, fixed-output boost DC-DC converter IC. It operates from a 3.0V–4.0V input, delivers up to 500mA at a fixed 3.8V–5.25V output, and features 2.2MHz forced-PWM operation, True Shutdown™, soft-start, and overtemperature/overcurrent protection - validated for automotive point-of-load and CAN transceiver power applications.

For engineers reviewing the MAX20471EVKIT# datasheet, MAX20471EVKIT# pinout, MAX20471EVKIT# application, or MAX20471EVKIT# equivalent, this kit provides fully assembled hardware with proven PCB layout, feedback injection point for stability testing, and support for evaluating FPWM/skip-mode behavior, spread-spectrum EMI reduction, and robustness across –40°C to +125°C.

Technical Context

The MAX20471EVKIT# implements the MAX20471 IC in a functional reference configuration, using integrated low R_DS(ON) switches and all-ceramic external components enabled by its 2.2MHz switching frequency. It supports both forced-PWM (for consistent noise profile and transient response) and skip mode (for light-load efficiency), with programmable spread-spectrum modulation to reduce peak radiated emissions.

This kit validates critical automotive-grade behaviors: current-mode control loop stability, True Shutdown™ sequencing, soft-start ramp rate, and thermal shutdown activation under sustained 500mA load at +125°C ambient - all within the specified input voltage range (3.0V–4.0V) and output regulation accuracy (±1.5% over line, load, and temperature).

Key Specifications

Availability

MAX20471EVKIT# is available at Aetrix Electronics and suitable for automotive CAN transceiver power, automotive point-of-load conversion, and industrial sensor node DC-DC evaluation requiring stable component supply and rapid prototyping capability.

Supply support for MAX20471EVKIT# 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

Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for automotive, industrial, and communications applications.

The MAX20471EVKIT# belongs to the MAX20471–MAX20473 evaluation platform family, developed specifically to accelerate validation of high-efficiency, automotive-qualified boost converters in safety-critical and EMI-sensitive environments.

FAQ

What is the purpose of the MAX20471EVKIT#?

The MAX20471EVKIT# is a fully assembled and tested evaluation kit that demonstrates the electrical performance and system integration of the MAX20471 boost converter IC. It enables engineers to validate output regulation accuracy, transient response, thermal behavior, and EMI characteristics before committing to custom PCB design. The MAX20471EVKIT# includes a proven layout and supports immediate bench testing without soldering or configuration.

Does the MAX20471EVKIT# support different output voltages?

No - the MAX20471EVKIT# is configured for a fixed output voltage within the 3.8V–5.25V range, as determined by the specific MAX20471 variant it hosts (e.g., MAX20471AULT+ for 5.0V). It does not include on-board resistive feedback adjustment; output voltage selection requires swapping the underlying IC or using a different kit variant aligned to the target voltage.

Can the MAX20471EVKIT# be used to evaluate light-load efficiency?

Yes - the MAX20471EVKIT# supports automatic transition between forced-PWM and skip mode, enabling accurate measurement of efficiency down to 1mA load. Its 2.2MHz base frequency and low-quiescent-current design allow verification of >85% efficiency at 10mA, critical for always-on automotive modules. The MAX20471EVKIT# includes test points for input/output current sensing to facilitate such measurements.

Is the MAX20471EVKIT# qualified for automotive applications?

Yes - the MAX20471EVKIT# evaluates the MAX20471 IC, which is AEC-Q100 Grade 0 qualified (–40°C to +125°C) and features automotive-specific protections including short-circuit, overtemperature, and input undervoltage lockout. The kit's PCB layout and component selection follow automotive EMI and thermal guidelines, making it suitable for validating designs targeting ISO 11898-2 or SAE J1939 systems.

Where can I obtain the firmware and full datasheet for the MAX20471EVKIT#?

The full datasheet, design files, and software tools for the MAX20471EVKIT# require a signed NDA with Analog Devices (formerly Maxim Integrated). Aetrix Electronics can facilitate the NDA process and provide access to the MAX20471EVKIT# user guide, schematic, bill of materials, and layout files upon approval. No firmware is required - the MAX20471EVKIT# operates autonomously as a hardware reference.