ISL6219ACA-T(2002) 데이터 시트보기 (PDF) - Intersil

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ISL6219ACA-T
(Rev.:2002)

Microprocessor CORE Voltage Regulator Precision Multi-Phase BUCK PWM Controller for Mobile Applications

Intersil 

®

Data Sheet

November 2002

ISL6219A

FN9093

Microprocessor CORE Voltage Regulator

Precision Multi-Phase BUCK PWM

Controller for Mobile Applications

The ISL6219A provides core-voltage regulation by driving up

to three interleaved synchronous-rectified buck-converter

channels in parallel. Intersil multi-phase controllers together

with ISL6207 gate drivers form the basis for the most reliable

power-supply solutions available to power the latest

industry-leading microprocessors. Multi-phase buck-

converter architecture uses interleaved timing to multiply

ripple frequency and reduce input and output ripple currents.

Lower ripple results in lower total component cost, reduced

dissipation, and smaller implementation area. Pre-

configured for 3-phase operation, the ISL6219A offers the

flexibility of 2-phase operation. Simply connect the unused

PWM pin to +5V. The channel switching frequency is

adjustable in the range of 100kHz to 1.5MHz giving the

designer the ultimate flexibility in managing the balance

between high-speed response and good thermal

management.

New features on the ISL6219A include Dynamic-VID™

technology allowing seamless on-the-fly VID changes with

no need for any additional external components. When the

ISL6219A receives a new VID code, it incrementally steps

the output voltage to the new level. Dynamic VID™ changes

are fast and reliable with no output voltage overshoot or

undershoot.

Like other Intersil multiphase controllers, the ISL6219A uses

cost and space-saving rDS(ON) sensing for channel current

balance and dynamic voltage positioning. 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 of additional

parts.

An integrated DAC decodes the 5-bit logic signal present at

VID0-VID4 and provides an accurate reference for precision

voltage regulation. The high-bandwidth error amplifier and

accurate voltage reference all work together to provide

better than 0.8% total system accuracy, and to enable the

fastest transient response available. A window comparator

toggles PGOOD if the output voltage moves out of range

and acts to protect the load in case of over voltage.

Features

• Multi-Phase Power Conversion

• Active Channel Current Balancing

• Lossless current sense scheme

- Uses MOSFET’s RDS(ON)

- Optional current sense method for higher precision

• Precision CORE Voltage Regulation

- ±0.8% System Accuracy Over Temperature

• Microprocessor Voltage Identification Input

- Dynamic VID technology

- 5-Bit VID Input

- 1.100V to 1.850V in 25mV Steps

• Programmable Droop Voltage

• Fast Transient Recovery Time

• Over Voltage, Under Voltage and Overcurrent Protection

• Power-Good Output

• 2 or 3 Phase Operation

• User selectable Switching Frequency of 100K - 1.5MHz

- 200KHz - 4.5MHz Effective Ripple Frequency

Ordering Information

PART NUMBER TEMP. (oC) PACKAGE PKG. NO.

ISL6219ACA

-10 to 85 28-Ld SSOP M28.15

ISL6219ACA-T

28 Lead SSOP Tape and Reel

ISL6219A (28 LEAD SSOP)

TOP VIEW

VID 0 1

VID 1 2

VID 2 3

VID 3 4

VID 4 5

NC 6

FS/EN 7

NC 8

FB 9

COMP 10

NC 11

NC 12

NC 13

GND 14

28 VCC

27 NC

26 NC

25 PGOOD

24 NC

23 ISEN1

22 PWM1

21 PWM2

20 ISEN2

19 ISEN3

18 PWM3

17 NC

16 VSEN

15 NC

1

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

1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

Copyright © Intersil Americas Inc. 2002. All Rights Reserved

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

Dynamic VID is a trademark of Intersil Americas Inc

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