IC manufacturers Analog Devices

IC manufacturers (99)

Analog Devices MAX17558

60V, Dual-Output, Synchronous Step-Down Controller

Overview

TopologyBuck Converter
Input voltage6-60 V
Switching frequency100-2200 kHz
Output 15 V / 5 A
Output 23.3 V / 10 A

Description

The MAX17558 is a dual-output, synchronous step-down controller that drives nMOSFETs. The device uses a constant-frequency, peak-current-mode architecture. The two outputs can be configured as independent voltage rails. Input capacitor size can be minimized by running the two outputs 180° out-of-phase. The IC supports current sensing using either an external current-sense resistor for accuracy or an inductor DCR for improved system efficiency. Current foldback limits MOSFET power dissipation under short-circuit conditions. The IC provides independent adjustable soft-start for each output and can start up monotonically into a prebiased output. The IC can be configured in either PWM or DCM modes of operation, depending on whether constant-frequency operation or light-load efficiency is desired. The IC operates over the -40°C to +125°C temperature range and is available in a lead(Pb)-free, 32-pin TQFN, 5mm x 5mm package with an exposed pad.

Features

  • 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

Typical applications

  • Computerized Numerical Control
  • Programmable Logic Controllers
  • Motion Control
  • Distributed DC Power Systems
  • Industrial Power Supplies

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT
(A)
RDC max.
(mΩ)
fres
(MHz)
SizeVersionISAT,10%
(A)
ISAT,30%
(A)
IR,40K
(A)
Samples
7447709002SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WE-PD SMT Power Inductor 2.2 16.3 6 65 1210 Standard 20 25 11.5
744771004SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WE-PD SMT Power Inductor 4.7 11.8 8.25 11 35 1260 Standard 8.25 10.8 8.25
Order Code Data­sheet Simu­lation
7447709002SPEC
744771004SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT
(A)
RDC max.
(mΩ)
fres
(MHz)
SizeVersionISAT,10%
(A)
ISAT,30%
(A)
IR,40K
(A)
Samples