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MAX5037 Datasheet

  • MAX5037

  • " VRM 9.0, Dual-Phase, Parallelable, Average Current-Mode Co...

  • Maxim   Maxim

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19-2552; Rev 1; 11/02
KIT
ATION
EVALU
BLE
AVAILA
VRM 9.0, Dual-Phase, Parallelable,
Average Current-Mode Controller
General Description
Features
o
+4.75V to +5.5V or +8V to +28V Input Voltage
Range
o
Up to 60A Output Current
o
Internal Voltage Regulator for a +12V or +24V
Power Bus
o
Internal 5-Bit DAC VID Control (VRM 9.0
Compliant, 0.8% Accuracy)
o
Programmable Adaptive Output Voltage
Positioning
o
True Differential Remote Output Sensing
o
Out-Of-Phase Controllers Reduce Input
Capacitance Requirement and Distribute Power
Dissipation
o
Average Current-Mode Control
Superior Current Sharing Between Individual
Phases and Paralleled Modules
Accurate Current Limit Eliminates MOSFET and
Inductor Derating
Prevents Current Sinking for Easy Paralleling
o
Integrated High-Output-Current Gate Drivers
o
Selectable Fixed Frequency 250kHz or 500kHz Per
Phase (Up to 1MHz for 2 Phases)
o
External Frequency Synchronization from 125kHz
to 600kHz
o
Internal PLL with Clock Output for Paralleling
Multiple DC-DC Converters
o
Power-Good Output
o
Phase Failure Detector (Patent Pending)
o
Overvoltage and Thermal Protection
o
44-Pin MQFP or QFN Packages
MAX5037
The MAX5037 dual-phase, PWM controller provides
high-output-current capability in a compact package
with a minimum number of external components. The
MAX5037 utilizes a dual-phase, average current-mode
control that enables optimal use of low R
DS(ON)
MOSFETs, eliminating the need for external heatsinks
even when delivering high output currents.
Differential sensing enables accurate control of the
output voltage, while adaptive voltage positioning
provides optimum transient response. An internal regula-
tor enables operation with either +5V or +12V input volt-
age without the need for additional voltage sources. The
high switching frequency, up to 500kHz per phase, and
dual-phase operation allow the use of low output induc-
tor values and input capacitor values. This accommo-
dates the use of PC board-embedded planar magnetics
achieving superior reliability, current sharing, thermal
management, compact size, and low system cost.
The MAX5037 also features a clock input (CLKIN) for syn-
chronization to an external clock, and a clock output
(CLKOUT) with programmable phase delay (relative to
CLKIN) for paralleling multiple phases.
The MAX5037 operates over the extended industrial
temperature range (-40擄C to +85擄C) and is available in
44-pin MQFP or QFN packages. Refer to the
MAX5038/MAX5041 data sheet for either a fixed output
voltage controller or an adjustable output voltage con-
troller in a 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
Ordering Information
PART
MAX5037EMH
MAX5037ETH
TEMP RANGE
-40擄C to +85擄C
-40擄C to +85擄C
PIN-PACKAGE
44 MQFP
44 QFN
Pin Configuration appears at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

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