MAX77812

PRODUCTION

20A User-Configurable Quad-Phase Buck Converter

High-Efficiency 20A BUCK with User-Selectable Phase Configuration

Data Sheet (Rev. 12) Product Selection Table
Part Models
12
1ku List Price
Starting From $2.35
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Part Details

  • 20A Maximum Output Current (5A per Phase)
  • VIN Range: 2.5V to 5.5V
  • VOUT Range: 0.250V to 1.525V with 5mV Steps
  • ±0.5% Initial Output Accuracy with Differential Sensing
  • 5 User-Selectable Phase Configurations
  • 91% Peak Efficiency (VIN = 3.8V, VOUT = 1.1V)
  • Auto (SKIP/PWM) and Forced PWM Modes
  • Enhanced Load Transient Response
  • Programmable Ramp-Up/Down Slew Rates
  • Programmable Startup/Shutdown Sequence
  • UVLO, Short-Circuit, and Thermal Protections
  • 2 User-Programmable General-Purpose Inputs
  • 3.4MHz High Speed I2C and 30MHz SPI Interface
  • 3.408mm x 3.368mm, 64-Bump WLP Package
MAX77812
20A User-Configurable Quad-Phase Buck Converter
MAX77812: Simplified Block Diagram
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 8

Technical Articles 2

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Tools & Simulations

Software Development 1

EE-Sim Power® Tools 1

The EE-Sim DC-DC Converter Tool uses your requirements to quickly create a complete power design including a schematic, BOM with commercially available parts, and time and frequency domain simulations. Your customized schematic can be downloaded for further analysis in the standalone EE-Sim OASIS Simulator, featuring SIMPLIS and SIMetrix SPICE engines.

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SIMPLIS Models 1

Evaluation Kits

eval board
schematic 1
MAX77812EVKIT

Evaluation Kit for the MAX77812

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Features and Benefits

  • 20A Maximum Output Current (5A per phase)
  • VIN Range: 2.5V to 5.5V
  • VOUT Range: 0.250V to 1.525V with 5mV Steps
  • ±0.5% Initial Output Accuracy with Differential Sensing
  • 5 User-selectable Phase Configurations
  • 91% Peak Efficiency (VIN = 3.8V, VOUT = 1.1V)
  • Auto (SKIP/PWM) and Forced PWM Modes
  • Enhanced Load Transient Response
  • Programmable Ramp-up/down Slew Rates
  • Programmable Startup/Shutdown Sequence
  • UVLO, Short-Circuit, and Thermal Protections
  • 2 User-programmable General-Purpose Inputs
  • 3.4MHz High Speed I2C and 30MHz SPI Interface
  • 3.408mm x 3.368mm 64-Bumps WLP Package

Product Details

The MAX77812 evaluation kit (EV kit) is a fully assembled and tested printed circuit board (PCB) that demonstrates the MAX77812. The EV kit allows for easy evaluation of each feature. It supports user-programmable phase configuration to one of five options:

  • Single output in 4 phase configuration (default)
  • Dual outputs in 3 + 1 phase configuration
  • Dual outputs in 2 + 2 phase configuration
  • Three outputs in 2 + 1 + 1 phase configuration
  • Four outputs in 1 + 1 + 1 + 1 phase configuration

A Micro-B USB cable can be connected between the EV kit and a PC for easy testing of the I2C interface. Windows®- based software provides a user-friendly interface to exercise the features of the MAX77812. This software offers a graphical user interface (GUI) as well as a register-based interface.
MAX77812EVKIT
Evaluation Kit for the MAX77812
MAX77812EVKIT: Board Photo

Reference Designs

MAXREFDES1238
MAXREFDES1238
MAXREFDES1238 Circuits from the lab

Scalable, Single Input, 6 Output, Power Solution for the Versal ACAP Platform

View Detailed Reference Design

Features and Benefits

There are 16 ICs used in total:

  • 1 Multiphase Controller IC
  • 8 Multiphase Powerstage ICs (configurable from 1–8+ phases for an optimized solution)
  • 2 9A POL switching regulator ICs
  • 1 MAX77812 PMIC
  • 1 MAXM17574 module IC
  • 1 MAX15103 LDO IC
  • 1 MAX15101 LDO IC
  • 1 MAX40010 CSA IC

Other features include the following:

  • Single 12V supply
  • X% Efficiency
  • Optimized layout for Versal ACAP IC
  • Small solution size
  • Highly scalable
MAXREFDES1238
Scalable, Single Input, 6 Output, Power Solution for the Versal ACAP Platform
MAXREFDES1238

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