CS5305GDWR28 datasheet(1/33 Pages) ONSEMI

部品番号	CS5305GDWR28

部品情報	Three?뭁hase Synchronous Switching Step?묭own Controller with Single Wire Current Sharing

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メーカー	ONSEMI [ON Semiconductor]

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July, 2006 − Rev. 7

1

Publication Order Number:

CS5305/D

CS5305

Three−Phase Synchronous

Switching Step−Down

Controller with Single

Wire Current Sharing

The CS5305 provides a low−cost, single−controller solution for the

low−voltage, high−current power needs of next−generation

workstation and server processors. This IC provides high accuracy and

the industry’s fastest transient response, reducing the need for large

banks of output capacitors and providing the most compact, reliable,

and economical power supply.

Since each phase’s output voltage and current feed back to develop

the PWM ramp signal (enhanced V2™ control), the CS5305 shares

output current accurately between phases. Accurate current sharing

means that the power supply design does not need to use power

components rated to handle mismatched current per phase. The

enhanced V2 control compensates for variations in both line and load.

The IC’s built−in single wire current sharing capability allows easy

paralleling of multiple Voltage Regulator Modules (VRMs) based on

the CS5305. The paralleled VRMs use a shared bus to provide high

current and high reliability to multiple microprocessor workstations

or servers.

The CS5305 meets VRM 9.x specifications with its Power Good,

Enable, Differential Remote Sense, and single−wire Current Share

features. The product fits server and workstation VRMs, and can be

used to power Embedded Processors. The IC provides the simplest,

lowest−cost solution for any low voltage, high current power supply.

Features

• Enhanced V2 Control Method

• VRM 9.x Compatible VID Codes

• Lossless Inductor Current Sensing

• Single Wire Active Current Sharing Between Converters

• Auto Master−Slave Current Share Control Method

• Programmable 200 to 800 kHz Switching Frequency

• Programmable Adaptive Voltage Positioning

• Differential Remote Sense

• Pulse−by−Pulse Current Limit

• Master Hiccup Overcurrent Protection through Single

Wire Share Bus

• 5−Bit DAC with 1% Tolerance

• ENABL Input

• VRM 9.x−Compliant Power Good Output

• Active Current Sharing During Soft Start

http://onsemi.com

Device

Package

Shipping

ORDERING INFORMATION

SO−28L

27 Units/Rail

SO−28L 1000 Tape & Reel

SO−28L

DW SUFFIX

CASE 751F

1

28

1

28

PWRGDS

IFB

SGND

CSREF

VCC

CS3

DRVON

CS2

GATE3

CS1

GATE2

ENABL

GATE1

ROSC

GND

OCSET

VID0

IOUT

VID1

SHARE

VID3

VDRP

VID2

SCOMP

VID4

VFB

PWRGD

COMP

PIN CONNECTIONS

CS5305GDW28

CS5305GDWR28

MARKING

DIAGRAMS

A

= Assembly Location

WL, L

= Wafer Lot

YY, Y

= Year

WW, W = Work Week

1

CS5305

AWLYYWW

28

同様の部品番号 - CS5305GDWR28

メーカー	部品番号	データシート	部品情報
ON Semiconductor	CS5301	165Kb / 20P	Three-Phase Buck Controller with Integrated Gate Drivers and Power Good October, 2002 ??Rev. 11
	CS5301	181Kb / 19P	Three?뭁hase Buck Controller with Integrated Gate Drivers and Power Good February, 2006 ??Rev. 12
	CS5301GDW32	165Kb / 20P	Three-Phase Buck Controller with Integrated Gate Drivers and Power Good October, 2002 ??Rev. 11
	CS5301GDW32	181Kb / 19P	Three?뭁hase Buck Controller with Integrated Gate Drivers and Power Good February, 2006 ??Rev. 12
	CS5301GDWR32	165Kb / 20P	Three-Phase Buck Controller with Integrated Gate Drivers and Power Good October, 2002 ??Rev. 11

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