ISL6563 Intersil Corporation, ISL6563 Datasheet

ISL6563

Manufacturer Part Number

ISL6563

Description

Two-Phase Multi-Phase Buck PWM Controller with Integrated MOSFET Drivers

Manufacturer

Intersil Corporation

Datasheet

1.ISL6563.pdf (19 pages)

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Download datasheet (448Kb)

Two-Phase Multi-Phase Buck PWM

Controller with Integrated MOSFET

Drivers

The ISL6563 two-phase PWM control IC provides a

precision voltage regulation system for advanced

microprocessors. Multi-phase power conversion is a marked

departure from single phase converter configurations

employed to satisfy the increasing current demands of

modern microprocessors and other electronic circuits. By

distributing the power and load current, implementation of

multi-phase converters utilize smaller and lower cost

transistors with fewer input and output capacitors. These

reductions accrue from the higher effective conversion

frequency with higher frequency ripple current due to the

phase interleaving process of this topology.

Outstanding features of this controller IC include

programmable VID codes compatible with Intel VRM9,

VRM10, as well as AMD’s Hammer microprocessors, along

with a system regulation accuracy of ±1%. The droop

characteristic, used to reduce the overshoot or undershoot

of the output voltage, is easily programmed with a single

resistor.

Important features of this controller IC include a set of

sophisticated over-voltage and over-current protection.

Over-voltage results in the converter turning the lower

MOSFETs ON to clamp the rising output voltage and protect

the microprocessor. Like other Intersil multiphase

controllers, the ISL6563 uses cost and space-saving

voltage positioning, and over-current protection. Channel

current balancing is automatic and accurate with the

integrated current-balance control system. Over-current

protection can be tailored to any application with no need for

additional parts. These features provide advanced protection

for the microprocessor and power system.

Ordering Information

ISL6563CR-T

ISL6563IR-T

ISL6563EVAL1

DS(ON)

PART NUMBER

sensing for channel current balance, dynamic

Evaluation Platform

TEMP. (

0 to 70

24 Ld 4x4 QFN

PACKAGE

Data Sheet

PKG. DWG. #

L24.4x4B

1-888-INTERSIL or 321-724-7143

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Features

• Integrated Two-Phase Power Conversion

• Both 5V and 12V Conversion

• Precision Channel Current Sharing

• Precision Output Voltage Regulation

• Microprocessor Voltage Identification Inputs

• Fast Transient Recovery Time

• Over-Current Protection

• Improved, Multi-tiered Over-Voltage Protection

• QFN Package:

Pinout

- Loss-Less Current Sampling - Uses r

- ±1% System Accuracy Over Temperature (Commercial)

- Up to a 6-Bit DAC

- Selectable between Intel’s VRM9, VRM10, or AMD’s

- Resistor-Programmable Droop Voltage

- Compliant to JEDEC PUB95 MO-220

- Near Chip Scale Package footprint, which improves

DACSEL/VID5

Hammer DAC codes

QFN - Quad Flat No Leads - Package Outline

PCB efficiency and has a thinner profile

December 2003

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

VRM10

COMP

VID1

VID0

Intersil (and design) is a registered trademark of Intersil Americas Inc.

ISL6563 (QFN)

TOP VIEW

GND

DS(ON)

ISL6563

FN9126.2

PHASE1

LGATE1

PVCC

LGATE2

PGND

PHASE2

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