19-1636; Rev 0; 2/00
MAX1717 Evaluation Kit
General Description
The MAX1717 evaluation kit (EV kit) demonstrates a
high-power, dynamically adjustable notebook CPU
application circuit. The MAX1717 DC-DC converter
steps down high-voltage batteries and/or AC adapters,
generating a precision, low-voltage CPU core V
CC
rail.
The MAX1717 EV kit meets the Intel mobile Pentium
廬
III
CPU鈥檚 transient voltage specification by using voltage
positioning to minimize output capacitor requirements.
This fully assembled and tested circuit board provides
a digitally adjustable 0.925V to 2V output voltage from a
7V to 24V battery input range. It delivers up to 12A out-
put current with 14.1A peak current. The EV kit oper-
ates at 300kHz switching frequency and has superior
line- and load-transient response. Output slew-rate con-
trol minimizes battery and inductor surge currents. With
its precision timer circuit, the MAX1717鈥檚 output voltage
slew rate can be tailored to a given application, provid-
ing 鈥渏ust-in-time鈥?arrival at the new DAC setting.
o
Voltage-Positioned Output
o
Lowest Output Capacitor Count (4)
o
Reduces CPU Power Consumption
o
Fast-Response Quick-PWM鈩?Architecture
o
7V to 24V Input Voltage Range
o
0.925V to 2V Output Voltage Range
o
12A Load-Current Capability (14.1A peak)
o
Controlled Input Surge Current During Output
Transition
o
300kHz Switching Frequency
o
No Current-Sense Resistor
o
VGATE Power-Good/Transition-Complete Indicator
o
24-Pin QSOP Package
o
Low-Profile Components
o
Fully Assembled and Tested
Features
o
High Speed, Accuracy, and Efficiency
Evaluates: MAX1717
Ordering Information
PART
MAX1717EVKIT
TEMP. RANGE
0擄C to +70擄C
IC PACKAGE
24 QSOP
Component List
DESIGNATION QTY
C1鈥揅4, C20
5
DESCRIPTION
10碌F, 25V ceramic capacitors (1812)
Taiyo Yuden TMK432BJ106KM or
Tokin C34Y5U1E106Z
220碌F, 2.5V, 15m鈩?low-ESR
specialty polymer capacitors
Panasonic EEFUE0E221R
or
470碌F, 6.3V, 30m鈩?low-ESR
tantalum capacitors
Kemet T510X477M006AS
10碌F, 6.3V ceramic capacitor
Taiyo Yuden JMK325BJ106MN
0.1碌F ceramic capacitor (1206)
0.22碌F ceramic capacitors (1206)
Not installed
470pF ceramic capacitor (1206)
1碌F ceramic capacitor (1206)
4700pF ceramic capacitors (0805)
N1
1
L1
1
DESIGNATION QTY
C18
D1
1
1
DESCRIPTION
1000pF ceramic capacitor (0805)
2A Schottky diode
International Rectifier 10MQ040 or
STMicroelectronics STPS2L25U
100mA Schottky diode
Central Semiconductor CMPSH-3
200mA switching diode
Central Semiconductor CMPD2838
Scope-probe jack
Berg Electronics 33JR135-1
2-pin headers
1碌H power inductor
Sumida CEP125-1R0MC or
Panasonic ETQP6F1R1BFA
N-channel MOSFET (SO-8)
International Rectifier IRF7811 or
IRF 7811A
C5, C6, C7
or
C5, C6, C7, C10
3
or
4
D2
D3
J1
1
1
1
10
C8
C9
C11, C12
C13, C21, C22
C14
C15
C17, C19, C23,
C24, C25
1
1
2
0
1
1
5
JUA0鈥揓UA4,
JUB0鈥揓UB4
Pentium is a registered trademark of Intel Corp.
Quick-PWM is a trademark of Maxim Integrated Products.
________________________________________________________________
Maxim Integrated Products
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For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
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