Analog Devices Inc./Maxim Integrated MAX77831WEVKIT#

Overview

MAX77831WEVKIT# from Analog Devices is a fully assembled and tested evaluation kit for the MAX77831BEWB+T 7A buck-boost regulator. It supports input voltages from 2.5V to 16V, delivers dynamically adjustable output from 4.5V–15V (internal feedback) or 3V–15V (external feedback), operates in forced-PWM mode at 1.8MHz, and enables I²C-based voltage control, current limit configuration, and fault monitoring - used for rapid validation of high-efficiency power architectures in portable and industrial systems.

For engineers reviewing the MAX77831WEVKIT# datasheet, MAX77831WEVKIT# pinout, MAX77831WEVKIT# application, or MAX77831WEVKIT# equivalent, this page provides verified hardware configuration details, I²C register interface guidance, jumper-controlled SEL/resistor settings, efficiency measurement methodology using dedicated sense pins, and Windows GUI software integration with MAXUSB_INTERFACE# for real-time register-level control and fault diagnostics.

Technical Context

The MAX77831WEVKIT# implements the MAX77831BEWB+T in a WLP-36 package with factory-default internal feedback, 5V startup output, 7A switching current limit, and I²C slave address 0x66. All critical nodes - IN, OUT, LX1, LX2, VIO, EN, POKB/INTB, SCL, and SDA - are accessible via test points or headers, and the board includes on-board 2.2kΩ pull-ups to VIO for I²C bus readiness.

Configuration flexibility is achieved through RSEL (R9) resistor selection (0Ω default), external feedback resistors (R10/R11), and jumper-controlled interfaces (J1–J4). The kit supports both direct DC power evaluation and PC-based GUI-driven testing via MAXUSB_INTERFACE#, with built-in LDO for VIO when external supply is disconnected.

Key Specifications

Availability

MAX77831WEVKIT# is available at Aetrix Electronics and suitable for power architecture validation, buck-boost regulator qualification, and I²C-controlled voltage rail development requiring stable component supply, traceable sourcing, and long-term evaluation kit continuity.

Supply support for MAX77831WEVKIT# 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 (DSP) technologies, serving industrial, automotive, communications, and healthcare markets with precision power, sensing, and interface solutions.

The MAX77831WEVKIT# belongs to Analog Devices' MAX77831 product line - designed specifically to accelerate development of compact, high-efficiency, programmable buck-boost power supplies for battery-powered and wide-input-range applications where dynamic voltage scaling and robust fault handling are critical.

FAQ

What is the primary function of the MAX77831WEVKIT#?

The MAX77831WEVKIT# is an evaluation kit for the MAX77831BEWB+T buck-boost regulator IC. It provides a fully assembled, tested PCB with accessible test points, jumper-configurable settings, and integrated support for MAXUSB_INTERFACE# communication. Its purpose is to enable rapid functional validation, efficiency measurement, and I²C register-level evaluation of the MAX77831's 7A, 2.5V–16V input, 3V–15V output capabilities in real-world power system designs.

Does the MAX77831WEVKIT# include the MAX77831 IC, and what is its package type?

Yes, the MAX77831WEVKIT# includes one MAX77831BEWB+T IC installed on the board. This device uses a 36-bump Wafer-Level Package (WLP-36), optimized for space-constrained applications. The physical layout follows Maxim's recommended HDI/non-HDI guidelines, with critical components placed per layout best practices for low-noise, high-efficiency operation.

How is output voltage configured and adjusted on the MAX77831WEVKIT#?

The MAX77831WEVKIT# supports two output voltage configurations: internal feedback (default 5V startup, 4.5V–15V range) and external feedback (3V–15V range, set via RTOP/RBOT resistors). Voltage is adjusted dynamically via I²C using the GUI software or direct register writes. The RSEL resistor (R9) selects feedback mode and sets I²C address and current limit - 0Ω configures internal feedback and 7A limit with address 0x66.

What software and hardware are required to use the I²C interface on the MAX77831WEVKIT#?

To use the I²C interface on the MAX77831WEVKIT#, you need the MAXUSB_INTERFACE# adapter, a USB Type-A to Micro-USB cable, a Windows PC, and the official MAX77831 EV Kit GUI software. Jumper settings J3, J4, and R3 must be installed to connect the MAXUSB_INTERFACE# to the EV kit's SDA/SCL/VIO lines. The VL jumper on the MAXUSB_INTERFACE# must be set to 1.8V to avoid damaging the MAX77831BEWB+T.

Can the MAX77831WEVKIT# be used without the MAXUSB_INTERFACE#?

Yes, the MAX77831WEVKIT# can operate standalone with DC input and load without the MAXUSB_INTERFACE#. For basic functionality - enabling/disabling via EN, monitoring POKB/INTB, and measuring fixed output - no external interface is needed. To access I²C features (voltage adjustment, fault register reads, current limit changes), an external I²C master must be connected to SDA/SCL pins, with proper level-shifting and pull-up resistors, and the MAXUSB_INTERFACE# jumpers (J3/J4/R3) must be removed.