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62884CIRTZ Просмотр технического описания (PDF) - Intersil

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62884CIRTZ Single-Phase PWM Regulator for IMVP-6™ Mobile CPUs Intersil
Intersil Intersil
62884CIRTZ Datasheet PDF : 30 Pages
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Single-Phase PWM Regulator for IMVP-6Mobile
CPUs
ISL62884C
The ISL62884C is a single-phase PWM buck regulator for
miroprocessor core power supply. It uses an integrated
gate drivers to provide a complete solution. The PWM
modulator of ISL62884C is based on Intersil's Robust
Ripple Regulator (R3™) technology. Compared with
traditional modulators, the R3™ modulator commands
variable 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 ISL62884C is fully compliant with IMVP-6™
specifications. It responds to DPRSLPVR signals by
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.
Features
• Precision Core Voltage Regulation
- 0.5% System Accuracy Over-Temperature
- Enhanced Load Line Accuracy
• Voltage Identification Input
- 7-Bit VID Input, 0V to 1.500V in 12.5mV Steps
- Supports VID Changes On-The-Fly
• Supports Multiple Current Sensing Methods
- Lossless Inductor DCR Current Sensing
- Precision Resistor Current Sensing
• Superior Noise Immunity and Transient Response
• Current Monitor
• Differential Remote Voltage Sensing
• High Efficiency Across Entire Load Range
• Integrated Gate Driver
• Adaptive Body Diode Conduction Time Reduction
• User-selectable Overshoot Reduction Function
• Small Footprint 28 Ld 4x4 TQFN Package
• Pb-Free (RoHS Compliant)
Applications*(see page 29)
• Notebook Core Voltage Regulator
• Notebook GPU Voltage Regulator
Related Literature*(see page 29)
• See AN1545 for Evaluation Board Application Note
“ISL62884CEVAL2Z Evaluation 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
0
VIN = 19V
VIN = 12V
VIN = 8V
2 4 6 8 10 12 14 16 18 20 22
IOUT (A)
March 16, 2010
FN7591.0
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright © Intersil Americas Inc. 2010. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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