General Description

The MAX5038A/MAX5041A dual-phase, PWM controllers provide high-output-current capability in a compact package with a minimum number of external components. The MAX5038A/MAX5041A utilize a dual-phase, average-current-mode control that enables optimal use of low RDS(ON) MOSFETs, eliminating the need for external heatsinks even when delivering high output currents.

Features

♦ +4.75V to +5.5V or +8V to +28V Input Voltage Range

♦ Up to 60A Output Current

♦ Internal Voltage Regulator for a +12V or +24V Power Bus

♦ True Differential Remote Output Sensing

♦ Two Out-Of-Phase Controllers Reduce Input

    Capacitance Requirement and Distribute Power Dissipation

♦ Average-Current-Mode Control

    Superior Current Sharing Between Individual Phases and Paralleled Modules

    Accurate Current Limit Eliminates MOSFET and Inductor Derating

♦ Limits Reverse-Current Sinking in Paralleled Modules

♦ Integrated 4A Gate Drivers

♦ Selectable Fixed Frequency 250kHz or 500kHz per Phase (Up to 1MHz for Two Phases)

♦ Fixed (MAX5038A) or Adjustable (MAX5041A) Output Voltages

♦ External Frequency Synchronization from 125kHz to 600kHz

♦ Internal PLL with Clock Output for Paralleling Multiple DC-DC Converters

♦ Thermal Protection

♦ 28-Pin SSOP Package

Applications

    Servers and Workstations

    Point-of-Load High-Current/High-Density

    Telecom DC-DC Regulators

    Networking Systems

    Large-Memory Arrays

    RAID Systems

    High-End Desktop Computers