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ISL62881CIRTZ Datasheet(PDF) 1 Page - Intersil Corporation

Part # ISL62881CIRTZ
Description  Single-Phase PWM Regulator for IMVP-6.5??Mobile CPUs and GPUs
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL62881CIRTZ Datasheet(HTML) 1 Page - Intersil Corporation

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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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.
Single-Phase PWM Regulator for IMVP-6.5™ Mobile
CPUs and GPUs
ISL62881C, ISL62881D
The ISL62881C provides a complete solution for
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.
Fully compliant with IMVP6.5™, the ISL62881C is easily
configurable as a CPU or graphics VCORE controllers by
offering: responds to DPRSLPVR signals by
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.
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.
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.
Features
• Precision Core Voltage Regulation
- 0.5% System Accuracy Over-Temperature
- Enhanced Load Line Accuracy
• Supports Multiple Current Sensing Methods
- Lossless Inductor DCR Current Sensing
- Precision Resistor Current Sensing
• Current Monitor
• Differential Remote Voltage Sensing
• Integrated Gate Driver
• Split LGATE Driver to Increase Light-Load Efficiency
(For ISL62881D)
• 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
• Notebook GPU Voltage Regulator
Related Literature
•See AN1552 for Evaluation Board Application Note
“ISL62881CCPUEVAL2Z User Guide”
•See AN1553 for Evaluation Board Application Note
“ISL62881CGPUEVAL2Z User Guide”
Load Line Regulation
0.80
0.81
0.82
0.83
0.84
0.85
0.86
0.87
0.88
0.89
0.90
0.91
10 12 14 16 18 20 22
IOUT (A)
02
468
VIN = 19V
VIN = 12V
VIN = 8V
March 8, 2010
FN7596.0


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