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19-2782; Rev 0; 2/03
MAX5037 Evaluation Kit
General Description
The MAX5037 evaluation (EV) kit is a fully assembled
and tested VRM power-supply evaluation kit. The EV kit
module can be inserted directly into the VRM daughter
board AMP connector (1364125-1 or equivalent) on
Pentium ? 4 processor motherboards. The input voltage
range is either 4.75V to 5.5V or 8V to 13.2V. The EV kit
design is optimized for the best performance at 12V
input and 1.75V output voltage settings. The output is
programmable from 1.1V to 1.85V through VID input in
compliance with Intel’s VRM 9.0 specification. Up to 52A
load current is possible from dual-phase conversion.
High-power density and simple assembly is achieved
due to a lower component count using the MAX5037.
Warning
The MAX5037 EV kit is designed to operate at high cur-
rents, and some of the components operate at high
temperatures. Avoid touching the components. The
evaluation board is not provided with a fuse. Use a
controlled current source to power up the board.
Under severe fault conditions, this EV kit may dissipate
a large amount of power. To avoid possible personal
injury, operate this kit with care.
Pentium is a registered trademark of Intel Corp.
Component List
Features
o Designed to Meet VRM 9.0 Mechanical and
Electrical Specifications
o Two-Phase Power Conversion
o 5V or 12V Input Operation (Design Optimized for
12V Input)
o Output Voltage Programmable from 1.1V to 1.85V
in 25mV Step-Through VID Input
o VRM 9.0-Compliant Integrated 5-Bit DAC
o 52A Output Current
o Adaptive Voltage Positioning for Optimized
Transient Response
o Average Current-Mode Control for Superior
Current Sharing
o Current-Sharing Accuracy Within 5% Between
Parallel Channels
o Up to 95% Efficiency
o 500kHz Effective Switching Frequency
(Two Phases)
o Output Overload Protection
o Output Overvoltage Crowbar Protection
DESIGNATION QTY
C1, C2 2
DESCRIPTION
47μF ± 20%, 16V X5R ceramic
capacitors (2220)
TDK C5750X5R1C476M
o Internal Undervoltage Lockout and Startup Circuit
o Excellent Line-and-Load Transient Response
o Phase Failure Detector
o Multiple-Phase Synchronization Between Parallel
C3 – C11
9
22μF ± 20%, 16V X5R ceramic
capacitors (1812)
Modules
o VRM 9.0-Compliant EDGE Connector
TDK C4532X5R1C226M
270μF, 2V, 15m ? low-ESR specialty
Ordering Information
C12 – C21
10
capacitors
Panasonic EEFUE0D271R
100μF ± 10%, 6.3V ceramic capacitors
PART
MAX5037EVKIT
TEMP RANGE
0 ° C to +60 ° C
IC PACKAGE
44 QFN
C22, C23
C24 – C29
C30, C42
C31, C35, C37
2
6
2
3
(2220)
Murata GRM55FR60J107KA01L
10μF ± 20%, 6.3V X5R ceramic
capacitors (0805)
TDK C2012X5R0J106M
0 ? resistors (0603)
0.01μF ± 5%, 50V X7R ceramic
capacitors (0603)
Murata GRM188R71H103KA01
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
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