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Renesas Electronics Components Datasheet

ISL62882C Datasheet

Multiphase PWM Regulator

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DATASHEET
To request the full datasheet, please visit www.intersil.com/products/isl62882C
ISL62882C
Multiphase PWM Regulator for IMVP-6.5™ Mobile CPUs and GPUs
FN7556
Rev 3.00
September 26, 2013
The ISL62882C is a multiphase PWM buck regulator for
microprocessor or graphics processor core power
supply. The multiphase buck converter uses
interleaved phases to reduce the total output voltage
ripple with each phase carrying a portion of the total
load current, providing better system performance,
superior thermal management, lower component cost,
reduced power dissipation, and smaller implementation
area. The ISL62882C uses two integrated gate drivers
to provide a complete solution. The PWM modulator 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 ISL62882C 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 Phase 2, 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 unique split
LGATE function further increases light load efficiency.
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. The ISL62882C offers the FB2 function
to optimize 1-phase performance.
Applications
• Notebook Core Voltage Regulator
• Notebook GPU Voltage Regulator
Features
• Programmable 1- or 2-Phase CPU or GPU Mode
Operation
• 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
• Supports Multiple Current Sensing Methods
- Lossless Inductor DCR Current Sensing
- Precision Resistor Current Sensing
• Supports PSI# and DPRSLPVR modes
• Superior Noise Immunity and Transient Response
• Current Monitor and Thermal Monitor
• Differential Remote Voltage Sensing
• High Efficiency Across Entire Load Range
• Two Integrated Gate Drivers
• Excellent Dynamic Current Balance Between
Phases
• Split LGATE1 Drivers Increases Light Load
Efficiency
• 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)
Related Literature
• See AN1461 for ISL62882/ISL62882C Evaluation
Board Application Note “ISL62882EVAL2Z User Guide”
• See TB495, "ISL62882C, ISL62883C Connection
Guidelines for 1-Phase Configuration"
• See TB496, "VR_ON Timing Guidelines for ISL6288x
Products"
Load Line Regulation
1.10
1.08
1.06
VIN = 8V
1.04
1.02
1.00
VIN = 12V
VIN = 19V
0.98
0.96
0.94
0.92
0 5 10 15 20 25 30 35 40 45 50 55 60 65
IOUT (A)
FN7556 Rev 3.00
September 26, 2013
Page 1 of 2


Renesas Electronics Components Datasheet

ISL62882C Datasheet

Multiphase PWM Regulator

No Preview Available !

ISL62882C
© Copyright Intersil Americas LLC 2009-2013. All Rights Reserved.
All trademarks and registered trademarks are the property of their respective owners.
For additional products, see www.intersil.com/en/products.html
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such
modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets are
current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its
subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
FN7556 Rev 3.00
September 26, 2013
Page 2 of 2


Part Number ISL62882C
Description Multiphase PWM Regulator
Maker Renesas
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ISL62882C Datasheet PDF






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