IRU3021MCW International Rectifier, IRU3021MCW Datasheet

IRU3021MCW

Manufacturer Part Number

IRU3021MCW

Description

IC CTRL/REG SYNC BUCK 28-SOIC

Manufacturer

International Rectifier

Datasheet

1.IRU3021MCW.pdf (10 pages)

Specifications of IRU3021MCW

Applications

Controller, Intel Processor

Voltage - Input

5V, 12V

Number Of Outputs

Voltage - Output

1.3 ~ 5.5 V

Operating Temperature

0°C ~ 70°C

Mounting Type

Surface Mount

Package / Case

28-SOIC (7.5mm Width)

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Other names

*IRU3021MCW
IRU3021M-CW
IRU3021M-CW

Available stocks

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Quantity

Price

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Bonase Electronics (HK) Co., Limited

Part Number:

IRU3021MCW

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SANYO

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Part Number:

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FEATURES

APPLICATIONS

TYPICAL APPLICATION

PACKAGE ORDER INFORMATION

Rev. 1.5

07/17/02

Provides single chip solution for Vcore, GTL+,

AGP bus, and 1.8V

Automatic voltage selection for AGP slot V

supply

Linear Regulator Controller On-Board for 1.8V

Designed to meet Intel latest VRM specification

for next generation microprocessors

On-Board DAC programs the output voltage from

1.3V to 3.5V

Linear Regulator Controller On-Board for 1.5V

GTL+ Supply

Loss-less Short Circuit Protection for all Outputs

Synchronous operation allows maximum effi-

ciency

Patented architecture allows fixed frequency

operation as well as 100% duty cycle during

dynamic load

Minimum Part Count

Soft-Start

High current totem pole driver for direct driving of

the external Power MOSFET

Power Good function monitors all outputs

Over-Voltage Protection Circuitry Protects the

switcher output and generates a Fault output

Total Power Solution for next generation Intel

processor application

OUT

3.3V

0 To 70

CONTROLLER IC WITH TRIPLE LDO CONTROLLER

(8C)

5-BIT PROGRAMMABLE SYNCHRONOUS BUCK

Figure 1 - Typical application of the IRU3021M.

IRU3021M

IRU3021MCW

CONTROL

LINEAR

DEVICE

DDQ

www.irf.com

SWITCHER

CONTROL

LINEAR

DESCRIPTION

The IRU3021M controller IC is specifically designed to

meet Intel specification for next generation microproces-

sor applications requiring multiple on-board regulators.

The IRU3021M provides a single chip controller IC for

the Vcore, three LDO controllers, one with an automatic

select pin that connects to the Type Detect pin of the

AGP slot for the AGP V

the other for the 1.8V chip set regulator as required for

the next generation PC applications. The IRU3021M uses

N-channel MOSFET as pass transistor for V

vider is necessary for any of the regulators. The switch-

ing regulator feature a patented topology that in combi-

nation with a few external components as shown in the

typical application circuit, will provide well in excess of

20A of output current for an on-board DC/DC converter

while automatically providing the right output voltage via

the 5-bit internal DAC .The IRU3021M also features, loss-

less current sensing for both switcher by using the R

of the high-side power MOSFET as the sensing resistor,

an output under-voltage shutdown that detects short cir-

cuit condition for the linear outputs and latches the sys-

tem off, and a Power Good window comparator that

switches its open collector output low when any one of

the outputs is outside of a pre-programmed window.

OUT

3(1.5V) and V

28-Pin Plastic SOIC WB

PACKAGE

OUT

4(1.8V). No external resistor di-

DDQ

Data Sheet No. PD94145

supply, one for GTL+ and

IRU3021M

OUT

2(V

DS(ON)

DDQ

Related parts for IRU3021MCW

IRU3021MCW Summary of contents

Page 1

... LINEAR CONTROL SWITCHER CONTROL IRU3021M LINEAR LINEAR CONTROL CONTROL DEVICE PACKAGE IRU3021MCW 28-Pin Plastic SOIC WB www.irf.com Data Sheet No. PD94145 IRU3021M supply, one for GTL+ and DDQ 2(V ), OUT DDQ 4(1.8V). No external resistor di- OUT ...

Page 2

IRU3021M ABSOLUTE MAXIMUM RATINGS V5 Supply Voltage ................................................... 7V V12 Supply Voltage .................................................. 20V Storage Temperature Range ...................................... -65°C To 150°C Operating Junction Temperature Range ..................... PACKAGE INFORMATION 28-PIN WIDE BODY PLASTIC SOIC (W) TOP VIEW Drive2 V12 1 28 ...

Page 3

PARAMETER SYM Error Comparator Section Input Bias Current Input Offset Voltage Delay to Outout Current Limit Section CS Threshold Set Current CS Comp Offset Voltage Hiccup Duty Cycle Output Drivers Section Rise Time Fall Time Dead Band Time Between High ...

Page 4

IRU3021M ...

Page 5

PIN# PIN SYMBOL PIN DESCRIPTION 9 SD This pin provides shutdown for all the regulators. A TTL compatible, logic level high applied to this pin disables all the outputs and discharges the soft-start capacitor. The SD signal turns off the ...

Page 6

IRU3021M BLOCK DIAGRAM V12 28 Enable V5 20 UVLO 1.17Vset SEN PGood 8 1.1Vset SEN SEN Fix 2 0.9Vset Drive4 15 R 1.26V 3R Drive3 18 Select 11 1.5V ...

Page 7

TYPICAL APPLICATION (Dual Layout with HIP6021) 12V Type Detect OUT 1.5V / 3.3V C13 OUT 1.5V C18 OUT 1.8V C19 Figure 3 ...

Page 8

IRU3021M IRU3021M APPLICATION PARTS LIST Dual Layout with HIP6021 Ref Desig Description Q1 MOSFET Q2 MOSFET Q3 MOSFET with Schottky Q4,5 MOSFET L1 Inductor L2 Inductor C1 Capacitor, Electrolytic C2,3 Capacitor, Electrolytic C4 Capacitor, Ceramic C5 Capacitor, Ceramic C6,18 Capacitor, ...

Page 9

Surface Mount, Wide Body PIN NO. 1 NOTE: ALL MEASUREMENTS ARE IN MILLIMETERS. Rev. 1.5 07/17/02 (W) SOIC Package C E DETAIL 0.51 0.020 SYMBOL 28-PIN MIN ...

Page 10

IRU3021M PACKAGE SHIPMENT METHOD PKG PACKAGE DESIG DESCRIPTION W SOIC, Wide Body IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 10 PIN PARTS COUNT PER TUBE Feed Direction Figure ...

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