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MAX17528

更新时间： 2024-11-15 11:18:19
品牌 Logo 应用领域
美信 - MAXIM 控制器
页数 文件大小 规格书
41页 894K
描述
1-Phase Quick-PWM Intel IMVP-6.5/GMCH Controllers

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MAX17528 数据手册

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19-4723; Rev 0; 7/09  
1-Phase Quick-PWM  
Intel IMVP-6.5/GMCH Controllers  
MAX17528  
General Description  
Features  
o 1-Phase Quick-PWM Controller  
o ±±0.5 ꢀ Accuracy Over Line, Load, and  
The MAX17528 comprises 1-phase Quick-PWM™ step-  
down VID power-supply controllers for Intel notebook  
CPUs. The Quick-PWM control provides instantaneous  
response to fast-load current steps. Active voltage  
positioning reduces power dissipation and bulk output  
capacitance requirements and allows ideal positioning  
compensation for tantalum, polymer, or ceramic bulk  
output capacitors.  
OUT  
Temperature  
o 7-Bit IMꢀP-60. DAC  
o IMꢀP-60. and GMCH Compliant  
o Active ꢀoltage Positioning with Adjustable Gain  
o Accurate Droop and Current Limit  
o Remote Output and Ground Sense  
o Adjustable Output-ꢀoltage Slew Rate  
o Power-Good Window Comparator  
o Current Monitor  
The MAX17528 is intended for two different notebook  
CPU/GPU core applications: either bucking down the bat-  
tery directly to create the core voltage, or bucking down  
the +5V system supply. The single-stage conversion  
method allows these devices to directly step down high-  
voltage batteries for the highest possible efficiency.  
Alternatively, 2-stage conversion (stepping down the  
+5V system supply instead of the battery) at higher  
switching frequency provides the minimum possible  
physical size.  
o Temperature Comparator  
o Drives Large Synchronous Rectifier FETs  
o 2ꢀ to 26ꢀ Battery Input Range  
o Adjustable Switching Frequency (6±±kHz max)  
o Undervoltage and Thermal-Fault Protection  
o Soft-Startup and Soft-Shutdown  
o Internal Boost Diode  
A slew-rate controller allows controlled transitions  
between VID codes. A thermistor-based temperature  
sensor provides programmable thermal protection. A  
current monitor provides an analog output current pro-  
portional to the processor load current.  
Ordering Information  
The MAX17528 implements both the Intel IMVP-6.5  
CPU core specifications (CLKEN pullup to 3.3V), as  
well as the Intel GMCH graphics core specifications  
(CLKEN = GND). The MAX17528 is available in a  
32-pin, 5mm x 5mm TQFN package.  
PART  
TEMP RANGE  
-40oC to +105oC  
PIN-PACKAGE  
MAX17528GTJ+  
32 TQFN-EP*  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
Pin Configuration  
Applications  
IMVP-6.5 Core Power Supply  
Intel GMCH 2009  
TOP VIEW  
24 23 22 21 20 19 18 17  
Intel Calpella Platforms  
16  
15  
LX 25  
DH 26  
D2  
D1  
Graphics Core Power Supply  
Voltage-Positioned Step-Down Converters  
14 D0  
27  
28  
29  
30  
31  
32  
PGDIN  
1-to-4 Lithium-Ion (Li+)-Cell Battery-to-CPU Core  
Supply Converters  
GND  
CLKEN  
13  
12  
VRHOT  
TIME  
ILIM  
MAX17528  
Notebooks/Desktops/Servers  
PAD  
GND  
11 SHDN  
10  
9
PWRGD  
TON  
V
CC  
CCV  
1
2
3
4
5
6
7
8
THIN QFN  
.mm x .mm  
Quick-PWM is a trademark of Maxim Integrated Products, Inc.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www0maxim-ic0com0  
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