MAX25255

RECOMMENDED FOR NEW DESIGNS

Dual 36V Input Voltage, 8A Synchronous Buck Converters with Multiphase Capability and ASIL B Safety Level

High Power Density and Scalable Power Conversion for Automotive Off-Battery Applications from Dual 6A to Single 32A

Data Sheet (Rev. 14) Product Selection Table
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Overview

  • Dual Buck Converter
    • Wide Input Range from 3.0V to 36V (42V, max)
    • Low Shutdown Supply Current (6.5µA, max)
    • Low Operating Quiescent Current with One Channel ON (12µA, typ)
    • Programmable VOUT from 0.8V to 14V
    • Up to 8A per Channel
    • 180° Out-of-Phase Operation between Two Converters
    • 24ns (typ) Minimum On-Time
    • MAXQ Power Architecture
  • Dual/Quad-Phase Operation
    • Ability to Operate Two ICs in Parallel for Quad-Phase Operation
    • ±10% Current Sharing Accuracy
    • Supports up to 16A in Dual-Phase and 32A in QuadPhase
  • Diagnostics and Redundant Circuits (MAX25255)
    • ASIL B Compliant
    • Redundant Reference
    • Die Temperature Monitor
    • Precision Overvoltage and Undervoltage Protection
  • General
    • 23-Pin, 4.50mm x 5.75mm FC2QFN Package
    • -40°C to +125°C Operating Ambient Temperature
    • AEC-Q100 Rating
    • 200kHz, 400kHz, 1MHz, or 2MHz Switching Frequency Options
    • Spread Spectrum
MAX25255
Dual 36V Input Voltage, 8A Synchronous Buck Converters with Multiphase Capability and ASIL B Safety Level
MAX25254-MAX25255 Simplified Block Diagram MAX25254-MAX25255 Pin Configuration
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Documentation

Data Sheet 1

Application Note 1

Technical Articles 1

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Evaluation Kits

MAX25255DUALEVKIT

Evaluation Kit for the MAX25255

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Features and Benefits

  • Input Supply Range from 3V to 36V
  • Buck Provides 3.3V Fixed Output and Adjustable from 0.8V to 14V
  • Delivers up to 12A/16A Output Current
  • Selectable BIAS LDO Input Source
  • Frequency-Synchronization Input
  • Independent Enable Inputs
  • Spread-Spectrum Available
  • Voltage Monitoring PGOOD Output Available
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX25255 dual phase evaluation kit (EV kit) provides a proven design to evaluate the MAX25255 automotive 2MHz synchronous buck converter dual phase operation. The EV kit comes with a MAX25255DAFDA/ VY+ (3.3V/2MHz)installed, as well as various test points and jumpers for evaluation.

The EV kit is designed to deliver up to 12A with input voltage 3V to 36V. The output voltage quality can be monitored by observing the PGOOD1 signal. The EV kit can also be used to evaluate other MAX25255 variants with minimal component changes.

APPLICATIONS

  • Front-End Power Supply for Head Units
  • ASIL Applications
  • General-Purpose Dual Buck Converters
  • Telematics Modules
  • Front Camera Power
MAX25255DUALEVKIT
Evaluation Kit for the MAX25255

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