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ISL62881C PDF预览

ISL62881C

更新时间: 2024-11-13 11:53:51
品牌 Logo 应用领域
英特矽尔 - INTERSIL 稳压器
页数 文件大小 规格书
37页 1156K
描述
Single-Phase PWM Regulator for IMVP-6.5™ Mobile CPUs and GPUs

ISL62881C 数据手册

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Single-Phase PWM Regulator for IMVP-6.5™ Mobile  
CPUs and GPUs  
ISL62881C, ISL62881D  
The ISL62881C provides a complete solution for  
Features  
• Precision Core Voltage Regulation  
- 0.5% System Accuracy Over-Temperature  
- Enhanced Load Line Accuracy  
microprocessor and graphic processor core power supply  
with it’s integrated gate drive. Based on Intersil’s Robust  
Ripple regulator (R3™) technology, the PWM modulator  
compared to traditional modulators, has faster transient  
settling time, variable switching frequency during load  
transients and has improved light load efficiency with its  
ability to automatically change switching frequency.  
• Supports Multiple Current Sensing Methods  
- Lossless Inductor DCR Current Sensing  
- Precision Resistor Current Sensing  
• Current Monitor  
Fully compliant with IMVP6.5™, the ISL62881C is easily  
• Differential Remote Voltage Sensing  
• Integrated Gate Driver  
configurable as a CPU or graphics V  
offering: responds to DPRSLPVR signals by  
controllers by  
CORE  
• Split LGATE Driver to Increase Light-Load Efficiency  
(For ISL62881D)  
entering/exiting diode emulations mode; reports  
regulator output current via the IMON pin; senses  
current by using a discrete resistor or the inductor;  
over-temperature thermal compensation of DCR, using a  
single NTC thermistor; differential sensing to accurately  
monitor and adjust processor die voltage; minimizes  
body diode conduction loss in diode emulation mode with  
it’s adaptive body diode conduction time.  
• Adaptive Body Diode Conduction Time Reduction  
• User-selectable Overshoot Reduction Function  
• Small Footprint 28 Ld 4x4 or 32 Ld 5x5 TQFN  
Package  
Applications  
• Notebook Core Voltage Regulator  
Need to aggressively reduce the output capacitor? The  
overshoot reduction function is user-selectable and can  
be disabled for those concerned about increased system  
thermal stress.  
• Notebook GPU Voltage Regulator  
Related Literature  
Maintaining all the ISL62881C functions, the ISL62881D  
offers VR_TT# function for thermal throttling control. It  
also offers the split LGATE function to further improve  
light load efficiency.  
• See AN1552 for Evaluation Board Application Note  
“ISL62881CCPUEVAL2Z User Guide”  
• See AN1553 for Evaluation Board Application Note  
“ISL62881CGPUEVAL2Z User Guide”  
Load Line Regulation  
0.91  
0.90  
0.89  
0.88  
0.87  
0.86  
0.85  
0.84  
0.83  
0.82  
0.81  
0.80  
V
= 19V  
IN  
V
= 12V  
IN  
V
= 8V  
IN  
0
2
4
6
8
10 12 14 16 18 20 22  
(A)  
I
OUT  
March 8, 2010  
FN7596.0  
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. 2010. All Rights Reserved  
All other trademarks mentioned are the property of their respective owners.  

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