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Maxim产品 - MAX17558介绍

MAX17558 - 60V, Dual-Output, SynchronousStep-Down Controller

MAX17558是Maxim美信半导体公司的一款DC-DC开关调节器产品，MAX17558是60V, Dual-Output, SynchronousStep-Down Controller，本站介绍了MAX17558的封装应用图解、特点和优点、功能等，并给出了与MAX17558相关的Maxim元器件型号供参考。

MAX17558 - 60V, Dual-Output, SynchronousStep-Down Controller - DC-DC开关调节器 - Wide Input Voltage Dual-Output Controller Enables Design Flexibility for Industrial Applications - 美信半导体

产品概述

The MAX17558 is a dual-output, synchronous step-downcontroller that drives nMOSFETs. The device uses aconstant-frequency, peak-current-mode architecture.

The two outputs can be configured as independentvoltage rails. Input capacitor size can be minimized byrunning the two outputs 180° out-of-phase.

The IC supports current sensing using either an externalcurrent-sense resistor for accuracy or an inductor DCRfor improved system efficiency. Current foldback limitsMOSFET power dissipation under short-circuit conditions.

The IC provides independent adjustable soft-start foreach output and can start up monotonically into aprebiased output. The IC can be configured in eitherPWM or DCM modes of operation, depending on whetherconstant-frequency operation or light-load efficiency isdesired.

The IC operates over the -40°C to +125°C temperaturerange and is available in a lead(Pb)-free, 32-pin TQFN,5mm x 5mm package with an exposed pad.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • Wide Range of Operation
  • Wide 4.5V to 60V Input Voltage Range
  • Wide 0.8V to 24V Output Voltage Range
  • RSENSE or Inductor DCR Current-Sensing
  • Selectable In-Phase or 180° Out-of-PhaseOperation
  • Adjustable 100kHz to 2.2MHz Switching Frequency
  • Independent Enable and PGOOD
  • Available in a Lead(Pb)-Free 32-Pin, 5mm x 5mmTQFN-EP Package
  • Enhances Power Efficiency
  • Low Impedance Gate Drives for High Efficiency
  • DCM Operation at Light Loads
  • Auxiliary Bootstrap LDO
  • Operates Reliably in Adverse Industrial Environments
  • Independent Adjustable Soft-Start or Tracking
  • Current Foldback Limits MOSFET Heat DissipationDuring a Short-Circuit Condition
  • Operates Over the -40°C to +125°C TemperatureRange
  • Output Overvoltage and Overtemperature Protections
    • 热门应用
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  • DC动力系统分配
  • 工业电源
  • 运动控制
  • 可编程逻辑控制器
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