ISL62881 查看數據表（PDF） - Renesas Electronics

零件编号

产品描述 (功能)

生产厂家

ISL62881

Single-Phase PWM Regulator for IMVP-6.5™ Mobile CPUs and GPUs

Renesas Electronics 

DATASHEET

ISL62881, ISL62881B

Single-Phase PWM Regulator for IMVP-6.5™ Mobile CPUs and GPUs

FN6924

Rev 3.00

June 16, 2011

The ISL62881 is a single-phase PWM buck regulator for

miroprocessor or graphics processor core power supply. It uses an

integrated gate driver to provide a complete solution. The PWM

modulator of ISL62881 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 ISL62881 can be configured as CPU or graphics Vcore

controller and is fully compliant with IMVP-6.5™ 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.

Maintaining all the ISL62881 functions, the ISL62881B 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

• 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

• Split LGATE Driver to Increase Light-Load Efficiency (for

ISL62881B)

• Adaptive Body Diode Conduction Time Reduction

• User-selectable Overshoot Reduction Function

• Capable of Disabling the Droop Function

• Audio-filtering for GPU Application

• Small Footprint 28 Ld 4x4 TQFN Package

• Pb-Free (RoHS Compliant)

Applications

• Notebook Computers

Ordering Information

PART NUMBER

(Notes 1, 2, 3)

PART

MARKING

TEMP. RANGE

(°C)

PACKAGE

(Pb-Free)

PKG.

DWG. #

ISL62881HRTZ

628 81HRTZ

-10 to +100

28 Ld 4x4 TQFN

L28.4x4

ISL62881BHRTZ

62881B HRTZ

-10 to +100

32 Ld 5x5 TQFN

L32.5x5E

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 ISL62881, ISL62881B. For more information on MSL please see techbrief

TB363.

FN6924 Rev 3.00

June 16, 2011

Page 1 of 35

Share Link: