ISL6562CB Intersil Corporation, ISL6562CB Datasheet

ISL6562CB

Manufacturer Part Number

ISL6562CB

Description

Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller

Manufacturer

Intersil Corporation

Datasheet

1.ISL6562CB.pdf (5 pages)

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Microprocessor CORE Voltage Regulator

Two-Phase Buck PWM Controller

The ISL6562 two-phase current mode, PWM control IC

together with companion gate drivers, the HIP6601A,

HIP6602A, HIP6603A or HIP6604 and MOSFETs provides a

precision voltage regulation system for advanced

microprocessors. Two-phase power conversion is a marked

departure from earlier single phase converter conﬁgurations

previously employed to satisfy the ever increasing current

demands of modern microprocessors. Multi-phase

converters, by distributing the power and load current results

in 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. For example, a two phase converter operating at

350kHz per phase will have a ripple frequency of 700kHz.

Moreover, greater converter bandwidth of this design results

in faster response to load transients.

Outstanding features of this controller IC include

programmable VID codes from the microprocessor that

range from 1.050V to 1.825V with an accuracy of 0.8%.

Pull up currents on these VID pins eliminates the need for

external pull up resistors.

Another feature of this controller IC is the PWRGD monitor

circuit which is held low until the CORE voltage increases, to

within 18% of the programmed voltage. Over-voltage, 24%

above programmed CORE voltage, results in the PWRGD

output going low to indicate that the CORE is above the

speciﬁed limit. Under voltage is also detected and results in

PWRGD going low if the CORE voltage falls 18% below the

programmed level. Over-current protection folds back the

output voltage to 95mV, reducing the regulator dissipation.

These features provide monitoring and protection for the

microprocessor and power system.

Ordering Information

ISL6562CB

ISL6562CB-T

ISL6560/62EVAL1

PART NUMBER

16 Ld SOIC Tape and Reel

Evaluation Platform

TEMP. (

0 to 70

16 Ld SOIC

PACKAGE

Data Sheet

M16.15

PKG. NO.

Intel® is a registered trademark of Intel Corporation.

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

1-888-INTERSIL or 321-724-7143

Features

• Two-Phase Power Conversion

• Precision Channel Current Sharing

• Precision CORE Voltage Regulation

• Microprocessor Voltage Identiﬁcation Input

• Fast Transient Recovery Time

• Over Current Protection

• High Ripple Frequency, (Channel Frequency

Applications

• VRM8.5 Modules

• Intel® Tualatin Processor Voltage Regulator

• Low Output Voltage, High Current DC/DC Converters

Related Literature

• Technical Brief TB363 “Guidelines for Handling and

Pinout

- 5-Bit VID Input

- 1.050V to 1.825V in 25mV Steps

- Programmable “Droop” Voltage

Times Number of Channels). . . . . . . . . . . . .100kHz to 2MHz

Processing Moisture Sensitive Surface Mount Devices

(SMDs)”

0.8% Accuracy

March 2001

VID25mV

COMP

VID3

VID2

VID1

VID0

Intersil and Design is a trademark of Intersil Americas Inc.

ISL6562 (SOIC)

TOP VIEW

File Number

VCC

REF

CS-

PWM1

PWM2

CS+

PWRGD

GND

ISL6562

9012

Related parts for ISL6562CB

ISL6562CB Summary of contents

Page 1

... These features provide monitoring and protection for the microprocessor and power system. Ordering Information o PART NUMBER TEMP PACKAGE ISL6562CB SOIC ISL6562CB SOIC Tape and Reel ISL6560/62EVAL1 Evaluation Platform 1 March 2001 Features • Two-Phase Power Conversion • Precision Channel Current Sharing • Precision CORE Voltage Regulation - 0.8% Accuracy • ...

Page 2

Block Diagram PWRGD VID3 VID2 D/A VID1 VID0 VID25mV FB COMP Simpliﬁed Power System Diagram FB SYNCHRONOUS PWM 1 RECTIFIED BUCK CHANNEL ISL6562 SYNCHRONOUS PWM 2 RECTIFIED BUCK CHANNEL VID Functional Pin Description 1 16 VID3 VID2 ...

Page 3

Absolute Maximum Ratings Supply Voltage (VCC -0.3V to 15V CS+. CS ...

Page 4

Electrical Speciﬁcations Recommended Operating Conditions, Unless Otherwise Noted PARAMETER Output Current Input Bias Current Maximum Output Voltage Output Disable Threshold FB Low Foldback Threshold -3dB Bandwidth CURRENT SENSE Threshold Voltage Current Limit Foldback Voltage COMP CS Input ...

Page 5

... Intersil Corporation’s quality certiﬁcations can be viewed at website www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. How- ever, no responsibility is assumed by Intersil or its subsidiaries for its use ...

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