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MAX17511

更新时间： 2024-09-26 02:50:51
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美信 - MAXIM /
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72页 3512K
描述
Dual-Output, 3-/2-/1-Phase 2-/1-Phase Quick-PWM Controllers for VR12/IMVP7

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MAX17511 数据手册

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19-5742; Rev 1; 7/11  
Dual-Output, 3-/2-/1-Phase + 2-/1-Phase  
Quick-PWM Controllers for VR12/IMVP7  
General Description  
Features  
S Intel VR12/IMVP-7-Compliant Serial Interface  
The MAX17411/MAX17511/MAX17511C/MAX17511N/  
MAX17511T are dual-output, step-down, constant on-time  
Quick-PWMK controllers for VR12/IMVP-7 CPU core sup-  
plies. The controllers consist of two high-current switching  
power supplies for CPU and GFX cores. The CPU regulator  
(regulator A) is a three-phase constant on-time architecture.  
The GFX regulator (regulator B) is also constant on-time  
architecture. The MAX17411 supports 2-phase operation  
and the MAX17511/MAX17511C/MAX17511N/MAX17511T  
support 1-phase operation. The MAX17411/MAX17511/  
MAX17511C/MAX17511N/MAX17511T include two internal  
drivers on regulator A and one internal driver on regula-  
tor B. External drivers such as the MAX17491 enable the  
additional phases.  
S 3-/2-/1-Phase Quick-PWM CPU Core Regulator  
Two Internal Drivers and One External Driver  
Transient-Phase Overlap Mode  
Dynamic Phase Selection  
S 2-/1-Phase Quick-PWM GFX Regulator  
One Internal and One External Driver  
S Active Overshoot Suppression  
S 8-Bit VR12/IMVP-7 DAC  
S ±±0.5 V  
Accuracy Over Line, Load, and  
Temperature  
OUT  
S Active Voltage Positioning with Programmable  
Both regulator A and regulator B include output voltage  
sensing and accurate load-line gain. Switching frequen-  
cies are programmable from 200kHz to 600kHz per  
phase. Output overvoltage protection (OVP, MAX17411/  
MAX17511/MAX17511C/MAX17511N), undervoltage pro-  
tection (UVP), and thermal protection ensure effective and  
reliable operation. When any of these protection features  
detect a fault, the controller shuts down both outputs.  
Gain  
S Accurate Lossless Current Balance  
S Accurate Droop and Current Limit  
S Remote Output and Ground Sense  
S Power-Good Window Comparators (POKA and  
POKB)  
The multiphase regulators include transient-phase over-  
lap and active overshoot suppression, which speed up  
the response time and reduce the total output capaci-  
tance. The CPU and GFX outputs are controlled inde-  
pendently by writing the appropriate data into a function-  
mapped register file. VID code transitions and soft-start  
are enabled with a precision slew-rate control circuit. The  
SVID interface also allows each regulator to be individu-  
ally set into a low-power, single-phase, pulse-skipping  
state to optimize efficiency. The MAX17411 is available in  
a 48-pin, 6mm x 6mm, TQFN package. The MAX17511/  
MAX17511C/MAX17511N/MAX17511T are available in a  
40-pin, 5mm O5mm, TQFN lead-free package.  
S 40.V to 24V Battery-Input Voltage Range  
S Programmable 2±±kHz to 6±±kHz Switching  
Frequency  
S External Thermal-Fault Detection Output  
(VR_HOT#)  
S Overvoltage (MAX17411/MAX17.11/MAX17.11C/  
MAX17.11N), Undervoltage, and Thermal-Fault  
Protection  
S Slew-Rate Controlled Soft-Start  
S Passive Soft-Shutdown (2±I Discharge Switches)  
S Integrated Boost Switches  
S Low-Profile, 48-Lead/4±-Lead TQFN Packages  
Applications  
VR12/IMVP-7 CPU Core Power Supplies  
Notebooks/Desktops/Servers  
Quick PWM is a trademark of Maxim Integrated Products, Inc.  
Ordering Information  
PART  
TEMP RANGE  
-40NC to +105NC  
-40NC to +105NC  
PIN-PACKAGE  
48 TQFN-EP*  
40 TQFN-EP*  
FEATURE  
MAX17411GTM+  
MAX17.11GTL+  
3-/2-/1-Phase + 2-/1-Phase  
3-/2-/1-Phase + 1-Phase  
Ordering Information continued on last page.  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
_______________________________________________________________ Maxim Integrated Products  
1
For information on other Maxim products, visit Maxim’s website at www.maxim-ic.com.  
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