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ISL62882

Multiphase PWM Regulator for IMVP-6.5™ Mobile CPUs and GPUs

Renesas Electronics 

DATASHEET

ISL62882, ISL62882B

Multiphase PWM Regulator for IMVP-6.5™ Mobile CPUs and GPUs

FN6890

Rev 4.00

June 21, 2011

The ISL62882 is a multiphase PWM buck regulator for

miroprocessor 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

ISL62882 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 ISL62882 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 ISL62882 offers the FB2 function to optimize

1-phase performance.

The ISL62882B has the same functions as the ISL62882, but

comes in a different package.

Ordering Information

Features

• Programmable 1- or 2-Phase CPU Mode Operation or

1-Phase 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

• Programmable 1- or 2-Phase Operation

• 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 or 48 Ld 6x6 TQFN Packages

• Pb-Free (RoHS Compliant)

Applications

• Notebook Core Voltage Regulator

• Notebook GPU Voltage Regulator

PART NUMBER

(Notes 1, 2, 3)

PART MARKING

TEMP. RANGE

(°C)

PACKAGE

(Pb-Free)

PKG.

DWG. #

ISL62882IRTZ

62882 IRTZ

-40 to +100

40 Ld 5x5 TQFN

L40.5x5

ISL62882HRTZ

62882 HRTZ

-10 to +100

40 Ld 5x5 TQFN

L40.5x5

ISL62882BHRTZ

62882 BHRTZ

-10 to +100

48 Ld 6x6 TQFN

L48.6x6

NOTES:

1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.

2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte

tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil

Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

3. For Moisture Sensitivity Level (MSL), please see device information page for ISL62882, ISL62882B. For more information on MSL please see techbrief

TB363.

FN6890 Rev 4.00

June 21, 2011

Page 1 of 41

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