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MAX17482

更新时间： 2024-11-14 11:18:19
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美信 - MAXIM 控制器
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48页 878K
描述
Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies

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MAX17482 数据手册

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19-4372; Rev 2; 7/09  
Dual-Phase, Quick-PWM Controllers for  
IMVP-6+/IMVP-6.5 CPU Core Power Supplies  
0/MAX17482  
General Description  
Features  
o Single-/Dual-Phase, Quick-PWM Controllers  
The MAX17021/MAX17082/MAX17482 are 2/1-phase-  
interleaved Quick-PWM™ step-down VID power-supply  
controllers for notebook CPUs. True out-of-phase oper-  
ation reduces input ripple current requirements and  
output- voltage ripple, while easing component selec-  
tion and layout difficulties. The Quick-PWM control pro-  
vides instantaneous response to fast load-current  
steps. Active voltage positioning reduces power dissi-  
pation and bulk output capacitance requirements and  
allows ideal positioning compensation for tantalum,  
polymer, or ceramic bulk output capacitors.  
o MAX17021 IMVP-6+ (Montevina)  
o MAX17082/MAX17482 IMVP-6.5 (Calpella)  
o
0.5ꢀ V  
Accuracy Over Line, Load, and  
OUT  
Temperature  
o 7-Bit 0 to 1.50V VID Control  
o Dynamic Phase Selection Optimizes Active/Sleep  
Efficiency  
o Transient Phase Overlap Reduces Output  
Capacitance  
o Integrated Boost Switches  
o Active Voltage Positioning with Adjustable Gain  
A slew-rate controller allows controlled transitions between  
VID codes, controlled soft-start and shutdown, and con-  
trolled exit from suspend. A thermistor-based temperature  
sensor provides a programmable thermal-fault output  
(VRHOT). A current monitor output (IMON) provides an  
analog current output proportional to the power consumed  
by the CPU (MAX17082/MAX17482 only). Output under-  
voltage, overvoltage (MAX17021/MAX17082 only), and  
thermal protection shut the controller down when any of  
these faults are detected. A voltage-regulator power-OK  
(PWRGD) output indicates the output is in regulation.  
Additionally, the MAX17021/MAX17082/MAX17482 fea-  
ture true differential current sense and a phase-good  
(PHASEGD) output that indicates a phase imbalance  
fault condition.  
o Programmable 200kHz to 800kHz Switching  
Frequency  
o Accurate Current Balance and Current Limit  
o Adjustable Slew-Rate Control  
o Power-Good, Clock Enable, and Thermal-Fault  
Outputs  
o Phase Current Imbalance Fault Output  
o Drives Large Synchronous Rectifier MOSFETs  
o 4V to 26V Battery Input-Voltage Range  
o Undervoltage and Thermal-Fault Protection  
o Overvoltage Protection (MAX17021/MAX17082)  
o Soft-Startup and Soft-Shutdown  
The MAX17021 supports the IMVP-6+ specification  
while the MAX17082/MAX17482 support the IMVP-6.5  
requirements. The MAX17021/MAX17082/MAX17482  
are available in a 5mm x 5mm, 40-pin TQFN package.  
Pin Configuration  
TOP VIEW  
Applications  
IMVP-6+/IMVP-6.5 Core Supply  
Multiphase CPU Core Supply  
Voltage-Positioned, Step-Down Converters  
Notebook/Desktop Computers  
Blade Servers  
30 29 28 27 26 25 24 23 22 21  
20 PHASEGD  
31  
32  
33  
34  
35  
36  
37  
38  
DPRSTP (SLOW)  
19  
18  
PWRGD  
CLKEN  
D0  
D1  
17 V3P3  
D2  
D3  
16  
15  
14  
13  
12  
11  
TON  
MAX17021  
(MAX17082)  
MAX17482  
D4  
D5  
PSI  
DPRSLPVR  
SHDN  
CSP2  
Ordering Information  
D6  
*EP  
8
39  
40  
+
CSP1  
CSN1  
PART  
TEMP RANGE  
-40°C to +105°C  
-40°C to +105°C  
-40°C to +105°C  
PIN-PACKAGE  
40 TQFN-EP*  
40 TQFN-EP*  
40 TQFN-EP*  
CSN2  
MAX17021GTL+  
MAX17082GTL+  
MAX17482GTL+  
1
2
3
4
5
6
7
9
10  
+Denotes a lead-free(Pb)/RoHS-compliant package.  
*EP = Exposed pad.  
THIN QFN  
() DESIGNATES MAX17082/MAX17482 PIN NAME.  
*EXPOSED PAD. CONNECTED TO GND.  
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 www.maxim-ic.com.  
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