ISL6219 Intersil Corporation, ISL6219 Datasheet

ISL6219

Manufacturer Part Number

ISL6219

Description

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

Manufacturer

Intersil Corporation

Datasheet

1.ISL6219.pdf (17 pages)

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Microprocessor CORE Voltage Regulator

Precision Multi-Phase BUCK PWM

Controller for Mobile Applications

The ISL6219 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 ISL6219 also offers 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 ISL6219 include Dynamic-VID™

technology allowing seamless on-the-fly VID changes with

no need for any additional external components. When the

ISL6219 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 ISL6219 uses

cost and space-saving r

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.

DS(ON)

sensing for channel current

Data Sheet

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

1-888-INTERSIL or 321-724-7143

Features

• Multi-Phase Power Conversion

• Active Channel Current Balancing

• Lossless current sense scheme

• Precision CORE Voltage Regulation

• Microprocessor Voltage Identification Input

• 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

Ordering Information

Pinout

ISL6219CA

- Uses MOSFET’s R

- Optional current sense method higher precision

- ±0.8% System Accuracy Over Temperature

- Dynamic VID technology

- 5-Bit VID Input

- 1.100V to 1.850V in 25mV Steps

- 200KHz - 4.5MHz Effective Ripple Frequency

PART NUMBER

FSET/EN

COMP

VID 4

VID 0

VID 2

VID 3

VID 1

GND

June 2002

ISL6219 (28 LEAD SSOP)

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

TEMP. (

-10 to 85

DS(ON)

Dynamic VID is a trademark of Intersil Americas Inc.

TOP VIEW

28-Ld SSOP M28.15

PACKAGE

ISL6219

VSEN

VCC

PGOOD

ISEN1

PWM1

PWM2

ISEN2

ISEN3

PWM3

FN9080.1

PKG. NO.

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