Analog Devices Inc./Maxim Integrated MAX25262EVKIT#

Overview

MAX25262EVKIT# from Analog Devices is a fully assembled and tested evaluation kit designed to demonstrate the MAX25262AFOA/VY+ synchronous buck converter operating at 2.1MHz with a fixed 5V output. It supports 3.5V–65V input, delivers up to 2A output current, features PGOOD monitoring, spread spectrum enablement, and external synchronization capability - validated for automotive and industrial DC-DC power design validation.

For engineers reviewing the MAX25262EVKIT# datasheet, MAX25262EVKIT# pinout, MAX25262EVKIT# application, or MAX25262EVKIT# equivalent, this kit enables rapid characterization of transient response, efficiency mapping, PGOOD timing, SYNC-driven frequency locking, and EXTVCC switchover behavior under real load conditions.

Technical Context

The MAX25262EVKIT# implements the MAX25262AFOA/VY+ in a fixed 5V, 2.1MHz configuration with default jumper settings enabling FPWM mode (SYNC=high), spread spectrum (SPS=high), and EXTVCC sourced from VOUT. Input filtering uses a 1000Ω ferrite bead (L1) and bulk electrolytic (C4), while output filtering combines ceramic (C13–C20) and polymer capacitors for low-noise regulation.

Hardware-level monitoring includes dedicated test points for VSUP, VOUT, PGOOD, SYNC, SPS, and EXTVCC, with proven PCB layout supporting EMI-compliant switching at 2.1MHz. The board accepts external loads up to 3A and withstands 70V transients, aligning with AEC-Q100-qualified system-level stress requirements.

Key Specifications

Availability

MAX25262EVKIT# is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial PLC I/O modules, and ADAS camera subsystems requiring stable component supply and fast-turn evaluation of high-voltage buck conversion.

Supply support for MAX25262EVKIT# 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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and automotive markets since 1965.

The MAX25262EVKIT# belongs to Analog Devices' automotive-grade power management evaluation platform family, engineered specifically for rapid validation of high-input-voltage buck regulators in harsh-environment applications.

FAQ

What is the primary IC evaluated by the MAX25262EVKIT#?

The MAX25262EVKIT# evaluates the MAX25262AFOA/VY+, a 2.1MHz synchronous buck converter rated for 3.5V–65V input and 2A output. It is pre-configured for fixed 5V output and includes all necessary passive components, test points, and jumpers to validate performance without modification. The MAX25262EVKIT# does not evaluate the MAX25263 or other variants unless hardware changes are made.

Can the MAX25262EVKIT# be used to evaluate adjustable output voltages?

Yes - the MAX25262EVKIT# supports adjustable output from 1V to 20V by replacing resistors R5 and R6 per the equation R5 = R6 × (V_OUT/V_FB − 1), where V_FB = 1V (typ). The board's default 5V setting uses factory-installed resistors; reconfiguration requires soldering but retains full functionality including PGOOD and SYNC compatibility.

How is synchronization implemented on the MAX25262EVKIT#?

Synchronization on the MAX25262EVKIT# is controlled via the SYNC pin: pulling it high forces FPWM mode across all loads, while pulling it low enables skip mode at light loads. When driven by an external clock, the MAX25262AFOA/VY+ locks to that frequency - verified using oscilloscope monitoring of inductor voltage. Default jumper position (1–2) configures FPWM mode for deterministic 2.1MHz operation.

What is the role of the PGOOD signal on the MAX25262EVKIT#?

The PGOOD signal on the MAX25262EVKIT# is a dedicated open-drain output that asserts high when VOUT remains within ±6.5% of 5V (i.e., 4.675V–5.4V) for ≥10ms. It is accessible at TP_PGOOD and used for system power sequencing, fault detection, and downstream enable control. PGOOD goes low during undervoltage, overvoltage, or startup delay - critical for functional safety validation.

Does the MAX25262EVKIT# support EXTVCC bypass, and how is it configured?

Yes - the MAX25262EVKIT# supports EXTVCC bypass via jumper J4 (EXTVCC). Default position (1–2) connects EXTVCC to VOUT for optimal gate drive efficiency. To use an external 5V–12V supply, move the shunt to position 2–3. This bypasses the internal LDO and lowers R_DS(on), improving full-load efficiency - especially important when evaluating thermal performance at 2A continuous output.