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Analog Devices Inc./Maxim Integrated MAX25431EVKIT#

Name: MAX25431EVKIT#
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX25431EVKIT#
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX25431EVKIT#

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: DC/DC & AC/DC (Off-Line) SMPS Evaluation Boards

Package:

Datasheet:: MAX25431EVKIT#.pdf

Description:: EVAL BOARD FOR MAX25431

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,965

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Product details

Overview

MAX25431EVKIT# from Maxim Integrated is a fully assembled and tested evaluation kit for the MAX25431 automotive-grade current-mode buck-boost controller IC. It supports 6V–36V input, delivers up to 16.67A peak input current, regulates 12V output at 420kHz, and includes PGOOD monitoring, SYNCOUT, and spread-spectrum EMI reduction - used for validating high-reliability power supplies in vehicle infotainment and ADAS ECUs.

For engineers reviewing the MAX25431EVKIT# datasheet, MAX25431EVKIT# pinout, MAX25431EVKIT# application, or MAX25431EVKIT# equivalent, this page provides verified hardware configuration details, CISPR-25-compliant layout validation, jumper-controlled FPWM/spread-spectrum operation, and test-point-accessible signals including EN, PGOOD, SYNC, and BIAS monitoring.

Technical Context

The MAX25431EVKIT# implements the MAX25431ATGA/VY+ controller in a fixed-PWM mode with spread-spectrum enabled by default, operating at 420kHz (adjustable 220kHz–2.2MHz). It uses four N-channel MOSFETs (NVMFS5C460NL) in an H-bridge topology, with input and output current sensing via 3mΩ (R1) and 4mΩ (R2) shunts.

Hardware features include a proven PCB layout compliant with CISPR-25 Class 5 emissions limits without external filtering, configurable synchronization (J3 center pin supports SYNCIN or SYNCOUT), and open-drain PGOOD referenced to regulated output voltage with 92% dropout threshold.

Key Specifications

Parameter	Value and Actual Design Meaning
V_IN Range	6V to 36V - supports wide automotive battery range including cold-crank and load-dump transients up to 40V.
V_OUT	12V nominal - factory-configured output with ±2% regulation verified under 2A load and 8V–14V input sweep.
f_SW	420kHz - balances efficiency, component size, and AM-band avoidance; adjustable from 220kHz to 2.2MHz.
I_IN (peak)	16.67A - set by 3mΩ input sense resistor; enables high-power buck-boost operation in boost mode.
PGOOD Threshold	92% of V_OUT - open-drain signal asserts low when output drops below 11.04V (for 12V config), enabling system fault detection.
EMC Compliance	CISPR-25 Class 5 - achieved with default layout and no added filtering, critical for automotive EMC validation.
SYNCOUT Phase	180° out-of-phase - allows interleaving with external controllers to reduce input ripple and EMI.

Availability

MAX25431EVKIT# is available at Aetrix Electronics and suitable for automotive power design validation, CISPR-25 pre-compliance testing, and buck-boost controller qualification requiring stable component supply, traceable sourcing, and production-ready reference layouts.

Supply support for MAX25431EVKIT# 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 MAX25431 product line delivers high-efficiency, AEC-Q100-qualified buck-boost controllers for 12V/24V automotive systems requiring robust transient response, low quiescent current (55µA), and integrated EMI mitigation.

FAQ

What is the default output voltage and switching frequency of the MAX25431EVKIT#?

The MAX25431EVKIT# is factory-configured for 12V output at 420kHz switching frequency using the MAX25431ATGA/VY+ controller. This configuration delivers ±2% regulation under 2A load and supports input sweeps from 8V to 14V while maintaining regulation. The frequency is adjustable from 220kHz to 2.2MHz via external resistor.

Does the MAX25431EVKIT# support external clock synchronization?

Yes, the MAX25431EVKIT# supports external clock synchronization via the center pin of jumper J3. When J3 is unshunted, the pin accepts an external SYNCIN signal. For the MAX25431ATGB variant, the same pin outputs SYNCOUT at 180° phase shift - enabling interleaved multi-phase operation.

How is power-good status monitored on the MAX25431EVKIT#?

Power-good status is monitored via the open-drain PGOOD test point. PGOOD goes low-impedance when the output voltage falls below 92% of nominal (e.g., <11.04V for 12V output). A shunt on J4 pulls PGOOD up to VBIAS, converting it to a logic-level signal usable by host microcontrollers.

What current-sense resistors are installed on the MAX25431EVKIT# and what limits do they set?

The MAX25431EVKIT# installs a 3mΩ resistor (R1) on the input path and a 4mΩ resistor (R2) on the output path. These set the input current limit to 16.67A and the runaway current limit to 18.75A. Higher current limits can be achieved by replacing R1/R2 with lower-value resistors per the MAX25431 datasheet equations.

Is the MAX25431EVKIT# compliant with automotive EMC standards?

Yes, the MAX25431EVKIT# PCB layout is proven compliant with CISPR-25 Class 5 radiated emissions requirements without additional filtering. This compliance is achieved using the default 12V/420kHz configuration and enabled spread-spectrum modulation - making it suitable for pre-compliance validation in automotive power designs.

MAX25431EVKIT# Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Packaging:: Box

Product Status:: Active

Main Purpose:: DC/DC, Step Up or Down

Outputs and Type:: 1 Non-Isolated Output

Voltage - Output:: -

Current - Output:: 12V

Voltage - Input:: 5A

Regulator Topology:: 6V ~ 36V

Frequency - Switching:: Buck-Boost

Contents:: 420kHz

Utilized IC / Part:: Board(s)

Power - Output:: MAX25431

MAX25431EVKIT# FAQ

1.How can I place an order for MAX25431EVKIT# through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX25431EVKIT# on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MAX25431EVKIT# reliable?

The price and inventory of MAX25431EVKIT# are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX25431EVKIT# is usually 5 days.

3.What payment methods are accepted for MAX25431EVKIT#?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX25431EVKIT# transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX25431EVKIT#?

MAX25431EVKIT# orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX25431EVKIT# order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MAX25431EVKIT#?

For technical support, including MAX25431EVKIT# datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX25431EVKIT# requirements.

6.How does Aetrix verify that MAX25431EVKIT# is sourced from the original manufacturer or authorized distributors?

All MAX25431EVKIT# products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX25431EVKIT# meets industry standards.

7.What is the process for return or replacement of MAX25431EVKIT#?

All MAX25431EVKIT# units undergo pre-shipment inspection (PSI). If there is an issue with MAX25431EVKIT#, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MAX25431EVKIT# part is unused and in its original packaging.

Return procedure for MAX25431EVKIT#:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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