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ISL62883CHRTZ

更新时间： 2024-11-13 05:39:43
品牌 Logo 应用领域
英特矽尔 - INTERSIL 稳压器开关
页数 文件大小 规格书
43页 1426K
描述
Multiphase PWM Regulator for IMVP-6.5™ Mobile CPUs and GPUs

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ISL62883CHRTZ 数据手册

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Multiphase PWM Regulator for IMVP-6.5™ Mobile  
CPUs and GPUs  
ISL62883C  
Features  
• Programmable 1, 2- or 3-Phase CPU or GPU Mode of  
Operation  
The ISL62883C is a multiphase PWM buck regulator for  
miroprocessor or graphics processor core power supply.  
The multiphase buck converter uses interleaved phase to  
reduce the total output voltage ripple with each phase  
carrying a portion of the total load current, providing  
better system performance, superior thermal  
• Precision Multiphase Core Voltage Regulation  
- 0.5% System Accuracy Over-Temperature  
- Enhanced Load Line Accuracy  
• Microprocessor Voltage Identification Input  
- 7-Bit VID Input, 0V to 1.500V in 12.5mV Steps  
- Supports VID Changes On-The-Fly  
management, lower component cost, reduced power  
dissipation, and smaller implementation area. The  
ISL62883C uses two integrated gate drivers and an  
external gate driver to provide a complete solution. The  
PWM modulator is based on Intersil's Robust Ripple  
• Supports Multiple Current Sensing Methods  
- Lossless Inductor DCR Current Sensing  
- Precision Resistor Current Sensing  
3
Regulator (R ) technology™. Compared with traditional  
3
modulators, the R ™ modulator commands variable  
• Supports PSI# and DPRSLPVR modes  
• Superior Noise Immunity and Transient Response  
• Current Monitor and Thermal Monitor  
• Differential Remote Voltage Sensing  
switching frequency during load transients, achieving  
faster transient response. With the same modulator, the  
switching frequency is reduced at light load, increasing  
the regulator efficiency.  
The ISL62883C can be configured as CPU or graphics  
Vcore controller and is fully compliant with IMVP-6.5™  
specifications. It responds to PSI# and DPRSLPVR signals  
by adding or dropping PWM3 and Phase 2 respectively,  
adjusting overcurrent protection threshold accordingly,  
and entering/exiting diode emulation mode. It reports  
the regulator output current through the IMON pin. It  
senses the current by using either discrete resistor or  
inductor DCR whose variation over temperature can be  
thermally compensated by a single NTC thermistor. It  
uses differential remote voltage sensing to accurately  
regulate the processor die voltage. The adaptive body  
diode conduction time reduction function minimizes  
the body diode conduction loss in diode emulation  
mode. User-selectable overshoot reduction function  
offers an option to aggressively reduce the output  
capacitors as well as the option to disable it for users  
concerned about increased system thermal stress. In  
2-Phase configuration, the ISL62883C offers the FB2  
function to optimize 1-Phase performance.  
• High Efficiency Across Entire Load Range  
• Two Integrated Gate Drivers  
• Excellent Dynamic Current Balance  
• FB2 Function Optimizes 1-Phase Mode Performance  
• Adaptive Body Diode Conduction Time Reduction  
• User-selectable Overshoot Reduction Function  
• Small Footprint 40 Ld 5x5 TQFN Packages  
• Pb-Free (RoHS Compliant)  
Applications*(see page 42)  
• Notebook Core Voltage Regulator  
• Notebook GPU Voltage Regulator  
Related Literature*(see page 42)  
• See AN1460 for ISL62883/ISL62883C Evaluation  
Board Application Note “ISL62883EVAL2Z User  
Guide”  
Load Line Regulation  
1.10  
1.08  
1.06  
1.04  
1.02  
1.00  
0.98  
0.96  
0.94  
0.92  
V
= 8V  
IN  
V
= 12V  
IN  
V
= 19V  
IN  
0
5
10 15 20 25 30 35 40 45 50 55 60 65  
(A)  
I
OUT  
March 18, 2010  
FN7557.1  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright © Intersil Americas Inc. 2009, 2010. All Rights Reserved  
All other trademarks mentioned are the property of their respective owners.  
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