IRU3055CQ IRF [International Rectifier], IRU3055CQ Datasheet

IRU3055CQ

Manufacturer Part Number

IRU3055CQ

Description

POWER MANAGEMENT CHIPSET FOR 3-PHASE VRM 9.0 CONVERTERS

Manufacturer

IRF [International Rectifier]

Datasheets

1.IRU3055.pdf (26 pages)

2.IRU3055CQ.pdf (2 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

IRU3055CQ

Manufacturer:

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

IRU3055CQTR

Quantity:

1 000

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FEATURES

APPLICATIONS

TYPICAL APPLICATION

PACKAGE ORDER INFORMATION

Rev. 1.4

08/13/02

Meets VRM 9.0 Specification

3-Phase Controller with On-Board MOSFET Driver

On-Board DAC programs the output voltage from

1.075V to 1.850V

Loss-less Short Circuit Protection

Programmable Frequency

Synchronous operation allows maximum efficiency

Minimum Part Count

Soft-Start

Power Good Function

Hiccup Mode Current Limit

Intel Pentium 4 and AMD K7

1uF

22nF

C12

100pF

(Optional)

47K

1uF

27K

C10

0.1uF

Vcc

Ref

Comp

0 To 70

IRU3055

(8C)

Figure 1 - Typical application of IRU3055.

PGnd1/

OCGnd

PGnd2

PGnd3

OCSet

HDrv2

HDrv3

HDrv1

LDrv1

LDrv2

LDrv3

IRU3055CQ

CS1

CS3

CS2

CL23

CL1

DEVICE

1uF

SYNCHRONOUS BUCK CONTROLLER IC

2.2K

www.irf.com

5-BIT PROGRAMMABLE 3-PHASE

36-Pin Plastic QSOP WB (Q)

DESCRIPTION

The IRU3055 is a 3-phase synchronous Buck controller

which provides high performance DC to DC converter for

high current applications.

The IRU3055 controller IC is specifically designed to meet

Intel and AMD specifications for the new microproces-

sor requiring low voltage and high current.

The IRU3055 features under-voltage lockout for both 5V

and 12V supplies, an external and programmable soft-

start function as well as programming the oscillator fre-

quency by using an external resistor.

0.1uF

IRF3704S

IRF3711S

IRF3704S

IRF3711S

IRF3704S

IRF3711S

PACKAGE

1uF

PRELIMINARY DATA SHEET TEST SPEC

1uH

1.5K

6x 1500uF

1uH

1000uF

Data Sheet No. PD94262

1uF

C11

C13

1uF

12V

IRU3055

1.5V / 60A

C14

8x 2700uF

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