Analog Devices Inc./Maxim Integrated MAX77812EVKIT#

Overview

MAX77812EVKIT# from Analog Devices is an evaluation kit for the MAX77812 quad-phase buck converter IC, designed to validate power delivery to high-performance processors in space-constrained, single-cell Li-ion battery systems. It supports up to 20A total output (5A per phase), 0.25V–1.525V programmable VOUT in 5mV steps, ±0.5% initial accuracy with differential sensing, and user-configurable phase modes (1Φ–4Φ) via hardware pins or I²C/SPI.

For engineers reviewing the MAX77812EVKIT# datasheet, MAX77812EVKIT# pinout, MAX77812EVKIT# application, or MAX77812EVKIT# equivalent, this kit enables rapid characterization of startup/shutdown sequencing, enhanced transient response (ETR), soft-start/stop slew rate control, and multi-phase efficiency optimization under real-world load profiles - critical for CPU/GPU, FPGA, and AR/VR headset power design.

Technical Context

The MAX77812EVKIT# implements the full reference design for the MAX77812 IC, including all four synchronous buck stages, differential remote sense routing, 3.4MHz I²C and 30MHz SPI interfaces, and configurable PH_CFG[2:0] logic inputs for phase selection. It integrates thermal monitoring, UVLO protection, and active discharge circuitry aligned with the IC's 165°C thermal shutdown threshold and 120°C/140°C interrupt levels.

It validates adaptive on-time PWM control with SKIP and forced-PWM modes, programmable current limits (3.0–7.2A PMOS peak), and ramp-up/down slew rates (1.25–60 mV/µs) across all four phases. The board supports ETR-enabled fast load transient recovery (<45mV droop at 0.1A→4A) and maintains <±0.5% DC output accuracy over temperature and line/load variations.

Key Specifications

Availability

MAX77812EVKIT# is available at Aetrix Electronics and suitable for CPU/GPU power validation, FPGA supply design, AR/VR headset development, and space-constrained portable electronics requiring stable component supply and fast time-to-test.

Supply support for MAX77812EVKIT# 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and consumer markets.

The MAX77812EVKIT# belongs to Analog Devices' Power Management Evaluation Kit portfolio, engineered specifically to accelerate qualification of multi-phase, high-current buck converters for advanced mobile and edge computing applications.

FAQ

What is the primary function of the MAX77812EVKIT#?

The MAX77812EVKIT# is a fully assembled and tested evaluation platform for the MAX77812 quad-phase buck converter IC. It enables engineers to verify electrical performance, configure phase modes, test startup/shutdown sequences, validate ETR behavior, and characterize efficiency across load and input voltage ranges - all without designing custom hardware. The MAX77812EVKIT# includes onboard firmware, jumpers, and test points aligned with the IC's full feature set.

Does the MAX77812EVKIT# support both I²C and SPI communication?

Yes, the MAX77812EVKIT# supports both interfaces as implemented by the underlying MAX77812 IC: a 3.4MHz high-speed I²C interface compliant with Standard/Fast/High-Speed modes, and a 30MHz SPI interface with dedicated SCS, MOSI, MISO, and SCL lines. Both are accessible via standard headers and supported by Analog Devices' evaluation software, allowing seamless register access and real-time DVS control for the MAX77812EVKIT#.

Can the MAX77812EVKIT# be used to evaluate different phase configurations?

Yes, the MAX77812EVKIT# provides hardware jumpers and logic-level inputs (PH_CFG0–PH_CFG2) to select all five supported phase configurations: 1Φ, 2Φ, 3Φ, 4Φ, and 2Φ+1Φ+1Φ. This allows direct comparison of efficiency curves, thermal distribution, and transient response across modes - essential for optimizing power architecture decisions before final PCB spin. Each configuration is validated on the MAX77812EVKIT# per the datasheet timing and stability criteria.

What protections are demonstrated on the MAX77812EVKIT#?

The MAX77812EVKIT# demonstrates UVLO (2.375V–2.625V threshold), short-circuit protection, and thermal shutdown at 165°C with 15°C hysteresis - all inherent to the MAX77812 IC. It also validates thermal interrupts at 120°C and 140°C, and includes visible indicators (LEDs) and register-accessible status flags. These protections are fully operational and testable on the MAX77812EVKIT# under controlled overload and temperature conditions.

Is differential remote sensing implemented on the MAX77812EVKIT#?

Yes, the MAX77812EVKIT# implements full differential remote sensing (SNSxP/SNSxN) for all four output phases, as specified in the MAX77812 datasheet. This ensures ±0.5% output voltage accuracy independent of PCB trace IR drop, and is verified using Kelvin-connected test points. The MAX77812EVKIT# schematic and layout follow best practices for noise immunity and matching, enabling accurate validation of the IC's precision regulation capability.