ADP3204 Analog Devices, ADP3204 Datasheet

ADP3204

Manufacturer Part Number

ADP3204

Description

3-Phase IMVP-II and IMVP-III Core Controller for Mobile CPUs

Manufacturer

Analog Devices

Datasheet

1.ADP3204.pdf (16 pages)

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Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ADP3204JCP-REEL

Quantity:

2 500

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GENERAL DESCRIPTION

The ADP3204 is a 1-, 2-, or 3-phase hysteretic peak current

dc-to-dc buck converter controller dedicated to power a mobile

processor’s core. The optimized low voltage design is powered

from the 3.3 V system supply. The nominal output voltage is

set by a 5-bit VID code. To accommodate the transition time

required by the newest processors, the ADP3204 features

high speed operation to allow a minimized inductor size that

results in the fastest change of current to the output. To

further allow for the minimum number of output capacitors

to be used, the ADP3204 features active voltage positioning

with ADOPT optimal compensation to ensure a superior

load transient response. The output signals interface with a

maximum of three ADP3415 MOSFET drivers that are

optimized for high speed and high efficiency for driving both the

top and bottom MOSFETs of the buck converter. The

ADP3204 is capable of controlling the synchronous rectifiers to

extend battery lifetime in light load conditions.

ADOPT is a trademark of Analog Devices, Inc.

*Protected by U.S.Patent No. 5,969,657; other patents pending.

REV. 0

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties that

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices.

FEATURES

Pin Selectable 1-, 2-, or 3-Phase Operation

Static and Dynamic Current Sharing Characteristics

Backward Compatible to IMVP-II

Superior Load Transient Response with ADOPT

Analog Devices’ Optimal Positioning Technology

Noise-Blanking for Speed and Stability

Synchronous Rectifier Control Extends Battery Life

Smooth Output Transition During VID Code Change

Cycle-by-Cycle Current Limiting

Hiccup or Latched Overload Protection

Transient-Glitch-Free Power Good

Soft Start Eliminates Power-On In-Rush Current Surge

Two-Level Overvoltage and Reverse Voltage

APPLICATIONS

IMVP-II and IMVP-III Core DC-to-DC Converters

Fixed Voltage Mobile CPU Core DC-to-DC Converters

Notebook/Laptop Power Supplies

Programmable Output Power Supplies

Protection

Core Controller for Mobile CPUs

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel:

Fax: 781/326-8703

DPRSHIFT

DPRSLP

HYSSET

PWRGD

DSHIFT

BSHIFT

DPSLP

781/329-4700

3-Phase IMVP-II and IMVP-III

BOM

VID4

VID3

VID2

VID1

VID0

ADP3204

FUNCTIONAL BLOCK DIAGRAM

DPRSLP

GEN

SHIFT SELECTOR

DPRSLP

VID

DETECTOR AND

PWRGD BLANKER

ENABLE UVLO-MAIN BIAS

VID TRANSIENT

DPSLP

BOM

CORE

MUX

AND

REG

VID

CLIM

PM MODULE

HYSTERESIS

SHIFT-MUX

SETTING

VCC

AND

GND

5-BIT VID

SS-HICCUP TIMER

COREGD MONITOR

FIXED

DAC

AND

REF

AND OCP

SR CONTROL

OVP AND RVP

ADP3204

SPLITTER

CURRENT

PHASE

SENSE

MUX

www.analog.com

OUT1

CS3

CS2

CS1

CS+

CS–

RAMP

REG

DACOUT

DACRAMP

OUT3

OUT2

COREFB

DRVLSD

CLAMP

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