Analog Devices / Maxim Integrated MAX77831WEVKIT Evaluation Kit

Analog Devices MAX77831WEVKIT Evaluation Kit facilitates an extensive evaluation of the features and performance of the MAX77831, an 18W, high-efficiency, high-performance buck-boost regulator that only operates in forced-PWM (FPWM) mode. The MAX77831 is capable of 2.5V to 16V input and dynamically adjustable output between 4.5V to 15V when using internal feedback resistors or between 3V to 15V when using external feedback resistors.

The Analog Devices MAX77831WEVKIT Evaluation Kit is factory-configured as internal feedback with the default startup output voltage at 5V. Another startup voltage is enabled with external feedback resistors. The output voltage can be adjusted dynamically through the I2C serial interface. The MAXUSB interface allows the use of Windows®-based software with a GUI and a detailed register-based interface, exercising all the IC features. The MAX77831BEWB+T is installed on the Evaluation Kit.

Features

  • Proven PCB reference design and layout benefit
  • Fully assembled and tested
  • Sense points for high-accuracy measurements
  • Accessible test point pins for EN, POKB/INTB, VIO, and the I2C serial interface SCL, SDA
  • MAXUSB interface that allows easy communication with a windows PC
  • GUI Software that drives the I2C serial interface for optional software control
  • Startup output voltage adjustable through external feedback resistors
  • Output voltage dynamically adjustable through the I2C serial interface
  • I2C Slave address, switching current limit, and feedback configuration adjustable using RSEL

Specifications

  • 2.5V to 16V Input voltage
  • 4.5V to 15V Output voltage internal feedback
  • 3V to 15V Output voltage external feedback
  • 5V Default output voltage internal feedback
  • 0W to 18W VIN ≥ 4V Output power
  • 97% VIN = 4V, VOUT = 5V, 700mA load peak efficiency

Required Equipment

  • MAX77831 Eval Kit
  • Adjustable DC power supply
  • 1.8V DC power supply
  • Digital multi-meters
  • Electronic load
  • MAXUSB Adapter for I2C serial interface (optional)
  • USB Type-A to micro-USB cable (optional)
  • Windows-based PC with MAX77831 Eval Kit GUI (optional)

Board Layout

Analog Devices / Maxim Integrated MAX77831WEVKIT Evaluation Kit

Analog Devices / Maxim Integrated MAX77831WEVKIT Evaluation Kit