Analog Devices Inc./Maxim Integrated MAX77874EVKIT#

Overview

MAX77874EVKIT# from Maxim Integrated is a fully assembled and tested evaluation kit for the MAX77874 quad-phase core buck regulator. It enables rapid characterization of output voltage regulation (0.9V to 1.1V), dynamic voltage scaling (DVS), load transient response via on-board pulse generator (3% duty cycle, 1ms period default), and I²C register-level control using Windows GUI software.

For engineers reviewing the MAX77874EVKIT# datasheet, MAX77874EVKIT# pinout, MAX77874EVKIT# application, or MAX77874EVKIT# equivalent, this kit supports hands-on validation of multi-phase power delivery in mobile SoC and AP applications, including DVS sequencing, remote sense accuracy, and fast load-step response under real-world PCB layout conditions.

Technical Context

The MAX77874EVKIT# implements the full signal chain required to evaluate the MAX77874 IC: USB-to-I²C bridge (FT232RQ), microcontroller-based system management (MAXQ2000-RBX+), dedicated 1.8V/2.5V/3.3V LDOs (MAX8511 series), and a configurable load pulse generator using MIC1555YM5 timer and FDS6574A MOSFET. All critical power paths include local and remote sense test points (VOUTS/PGNDS).

It provides direct access to all MAX77874 control interfaces - SDA/SCL via test points or USB, EN/DVS/VIO/NIRQ signals routed to headers, and programmable DVS through GUI slider with register-write confirmation. The board's layout follows Maxim's recommended guidelines for quad-phase buck regulators, including optimized thermal vias, split ground planes, and controlled-impedance routing for feedback and clock nets.

Key Specifications

Availability

MAX77874EVKIT# is available at Aetrix Electronics and suitable for mobile SoC power validation, AP processor core rail evaluation, and multi-phase buck regulator design verification requiring stable component supply and traceable reference hardware.

Supply support for MAX77874EVKIT# 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 high-reliability industrial, automotive, and computing applications.

The MAX77874EVKIT# belongs to Maxim's power management evaluation platform family, engineered specifically to accelerate development of compact, high-efficiency power delivery systems for application processors and mobile SoCs.

FAQ

What is the primary function of the MAX77874EVKIT#?

The MAX77874EVKIT# is a fully assembled evaluation platform for the MAX77874 quad-phase core buck regulator. It allows engineers to validate key performance metrics-including dynamic voltage scaling, load transient response, remote sensing accuracy, and I²C register control-without designing custom hardware. The kit includes on-board software, pulse generation circuitry, and test points aligned to Maxim's reference layout practices.

Does the MAX77874EVKIT# require external power supplies or only USB?

The MAX77874EVKIT# requires an external 3.7V DC supply applied across VSYS and PGND terminals (current-limited to 100mA per Quick Start instructions); USB provides only communication and logic power (via FT232RQ and onboard LDOs). The 3.7V input powers the MAX77874 buck stages, load pulse circuitry, and output rails-USB alone cannot sustain full operation.

How is the load transient response evaluated using the MAX77874EVKIT#?

The MAX77874EVKIT# integrates a configurable load pulse generator using MIC1555YM5 timer and FDS6574A MOSFET. Users select period (100μs–100ms) and duty cycle (1%–7) via jumpers J208–J217 and J212–J217, then press SW200 to inject controlled current steps into VOUT. Transient response is measured at VOUTS/PGNDS test points with oscilloscope triggering on PLS_OUT or J218 pin 2.

Can the MAX77874EVKIT# be used to evaluate remote sensing functionality?

Yes. The MAX77874EVKIT# provides dedicated remote sense connections at VOUTS and PGNDS test points, enabling direct measurement of voltage drop across PCB traces. This allows engineers to verify the MAX77874's closed-loop compensation under real layout conditions and quantify the effectiveness of its remote sense architecture in maintaining output regulation at the load point.

Is Windows GUI software mandatory to operate the MAX77874EVKIT#?

No-while the Windows GUI provides intuitive slider-based DVS control and register read/write, the MAX77874EVKIT# supports direct I²C access via SDA/SCL test points. Engineers may use external I²C masters (e.g., Bus Pirate, custom MCU firmware) to communicate with the MAX77874, as all register maps and command protocols are documented in the MAX77874 datasheet.