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廬

ISL6314

Data Sheet

March 30, 2007

FN6455.0

Single-Phase Buck PWM Controller with

Integrated MOSFET Drivers for Intel VR11

and AMD Applications

The ISL6314 single-phase PWM control IC provides a

precision voltage regulation system for advanced

microprocessors. This controller IC maintains the same

features as the multi-phase product family, but reduces the

output to a single-phase, for lower current systems. By

reducing the number of external parts, this integration is

optimized for a cost and space saving power management

solution.

One outstanding feature of this controller IC is its multi-

processor compatibility, allowing it to work with both Intel and

AMD microprocessors. Included are programmable VID

codes for Intel VR11 as well as AMD 5-bit and 6-bit DAC

tables. A circuit is provided for remote voltage sensing,

compensating for any potential difference between remote

and local grounds. The output voltage can also be positively

or negatively offset through the use of a single external

resistor.

Another unique feature of the ISL6314 is the addition of a

circuit that allows optimizing compensation to be added for

flatter load transient response and well controlled dynamic

VID response.

The ISL6314 also includes advanced control loop features

for optimal transient response to load apply and removal.

One of these features is highly accurate, fully differential,

continuous DCR current sensing for load line programming.

Active Pulse Positioning (APP) and Adaptive Phase

Alignment (APA) are two other unique features, allowing for

quicker initial response to high di/dt load transients; the

number of output bulk capacitors can be reduced, helping to

reduce cost.

Protection features of this controller IC include a set of

sophisticated overvoltage, undervoltage, and overcurrent

protection. Furthermore, the ISL6314 includes protection

against an open circuit on the remote sensing inputs.

Combined, these features provide advanced protection for the

microprocessor and power system.

Features

鈥?Integrated-driver Single-Phase Power Conversion

鈥?Precision Core Voltage Regulation

- Differential Remote Voltage Sensing

-

鹵0.5%

System Accuracy Over-Temperature

- Adjustable Reference-Voltage Offset

鈥?Optimal Transient Response

- Adaptive Phase Alignment (APA)

- Active Pulse Positioning (APP) Modulation

鈥?Fully Differential, Continuous DCR Current Sensing

- Accurate Load Line Programming

鈥?Variable Gate Drive Bias: 5V to 12V

鈥?Multi-Processor Compatible

- Intel VR11 Mode of Operation

- AMD Mode of Operation

鈥?Microprocessor Voltage Identification Inputs

- 8-Bit DAC

- Selectable between Intel VR11, AMD 5-bit, and AMD

6-bit DAC tables

- Dynamic VID Technology

鈥?Overcurrent Protection

鈥?Multi-tiered Overvoltage Protection

鈥?Digital Soft-Start

鈥?Selectable Operation Frequency up to 1.0MHz

鈥?Pb-free plus anneal available (RoHS compliant)

Ordering Information

PART

NUMBER*

(Note)

ISL6314CRZ

ISL6314IRZ

PART

MARKING

ISL6314 CRZ

ISL6314 IRZ

TEMP.

RANGE

(擄C)

0 to +70

PACKAGE

(Pb-free)

PKG.

DWG. #

32 Ld 5x5 QFN L32.5x5B

-40 to +85 32 Ld 5x5 QFN L32.5x5B

NOTE: Intersil Pb-free plus anneal products employ special Pb-free

material sets; molding compounds/die attach materials and 100% matte

tin plate termination finish, which are 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.

*Add 鈥?T鈥?suffix for tape and reel.

1

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. 2007. All Rights Reserved

All other trademarks mentioned are the property of their respective owners.

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