Analog Devices Inc./Maxim Integrated MAX15049EVKIT+

Overview

MAX15049EVKIT+ from Maxim Integrated is an evaluation kit for the MAX15049 triple-output synchronous buck controller, designed to validate power-up sequencing, prebias startup, and 120° out-of-phase operation in multi-rail DC-DC systems. It supports input voltages from 4.7V to 23V, delivers up to 15A per channel, and enables adjustable outputs down to 0.6V - ideal for ASIC/CPU core-and-I/O voltage sequencing in telecom and networking power supplies.

For engineers reviewing the MAX15049EVKIT+ datasheet, MAX15049EVKIT+ setup guide, MAX15049EVKIT+ test procedure, or MAX15049EVKIT+ schematic validation, this kit provides verified reference design files, configurable enable thresholds for precise sequencing control, prebias startup verification waveforms, and thermal performance characterization under full-load 120° phase-shifted operation.

Technical Context

The MAX15049EVKIT+ implements the MAX15049 IC in a fully assembled, tested PCB layout with three independent synchronous buck channels, each using external high- and low-side MOSFETs, 0.1µF BST capacitors, and 2.2µF REG bypassing. It replicates the IC's fixed-frequency voltage-mode control with programmable 200kHz–1.2MHz switching and digital soft-start (2048 clocks, 64-step ramp).

Key implemented features include sequenced enable logic (EN1→EN2→EN3), PGOOD monitoring of all three regulated outputs, lossless valley-current limit via R_DS(ON), hiccup-mode short-circuit protection, and thermal shutdown at +160°C. The board supports ratiometric tracking validation only via firmware/configurable jumpers - not native to MAX15049, which is sequencing-only.

Key Specifications

Availability

MAX15049EVKIT+ is available at Aetrix Electronics and suitable for telecom power supply validation, ASIC voltage sequencing qualification, and DDR memory rail commissioning requiring stable component supply and documented reference design fidelity.

Supply support for MAX15049EVKIT+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing applications.

The MAX15049 belongs to Maxim's triple-output buck controller product line, engineered specifically for reliable, compact, and sequenced multi-rail power delivery in space-constrained infrastructure equipment.

FAQ

What is the primary function of the MAX15049EVKIT+?

The MAX15049EVKIT+ is a fully assembled evaluation platform for the MAX15049 triple-output synchronous buck controller. It enables hardware validation of power-up sequencing, prebias startup behavior, 120° out-of-phase switching, and PGOOD assertion timing - all critical for deploying the MAX15049 in telecom, networking, and ASIC power systems.

Does the MAX15049EVKIT+ support both MAX15048 and MAX15049 ICs?

No - the MAX15049EVKIT+ is specifically configured and validated for the MAX15049 IC, which implements output sequencing. While physically compatible with the MAX15048 (tracking variant), the board's default jumper and firmware settings are optimized for MAX15049's EN-threshold-based sequencing logic and prebias startup capability.

Can the MAX15049EVKIT+ demonstrate ratiometric tracking?

No - ratiometric tracking is a feature exclusive to the MAX15048. The MAX15049EVKIT+ implements only the MAX15049's sequencing functionality. Any ratiometric behavior observed would require external circuitry or firmware modification not supported by the standard MAX15049EVKIT+ configuration.

What input and output configurations are pre-populated on the MAX15049EVKIT+?

The MAX15049EVKIT+ ships with default output voltages of 3.3V (VOUT1), 1.8V (VOUT2), and 1.2V (VOUT3), set via precision feedback resistors. Input is configured for 12V operation, with optional 5V support via IN–REG shorting. All three channels use discrete external MOSFETs and include populated BST, COMP, and PGND networks per channel.

Is thermal performance data available for the MAX15049EVKIT+ under full load?

Yes - the MAX15049EVKIT+ documentation includes thermal imaging results showing junction temperature rise ≤29°C above ambient at 15A/channel, 12V_IN, 500kHz, and +25°C ambient, confirming effective heat dissipation via the exposed-pad TQFN-EP mounting and internal copper pour design used on the MAX15049EVKIT+ PCB.