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NCP5314

Two/Three/Four鈭扨hase

Buck CPU Controller

The NCP5314 provides full鈭抐eatured and flexible control for the

latest high鈭抪erformance CPUs. The IC can be programmed as a two鈭?

three鈭?or four鈭抪hase buck controller, and the per鈭抪hase switching

frequency can be as high as 1.2 MHz. Combined with external gate

drivers and power components, the controller implements a compact,

highly integrated multi鈭抪hase buck converter.

Enhanced V

2

鈩?/div>

control inherently compensates for variations in

both line and load, and achieves current sharing between phases. This

control scheme provides the industry鈥檚 fastest transient response,

reducing the need for large banks of output capacitors and higher

switching frequency.

The controller meets VR(M)10.x specifications with all the required

functions and protection features.

Features

鈾?/div>

http://onsemi.com

MARKING DIAGRAMS

32

1

32 PIN QFN

MN SUFFIX

CASE 485J

(Bottom View)

NCP5314

AWLYYWW

鈥?/div>

Switching Regulator Controller

Programmable 2/3/4 Phase Operation

鈾?/div>

Lossless Current Sensing

鈾?/div>

Enhanced V

2

Control Method Provides Fast Transient Response

鈾?/div>

Programmable Up to 1.2 MHz Switching Frequency Per Phase

鈾?/div>

0 to 100% Adjustment of Duty Cycle

鈾?/div>

Programmable Adaptive Voltage Positioning Reduces Output

Capacitor Requirements

鈾?/div>

Programmable Soft鈭扴tart

鈥?/div>

Current Sharing

鈾?/div>

Differential Current Sense Pins for Each Phase

鈾?/div>

Current Sharing Within 10% Between Phases

鈥?/div>

Protection Features

鈾?/div>

Programmable Pulse鈭抌y鈭扨ulse Current Limit for Each Phase

鈾?/div>

鈥?11110鈥?and 鈥?11111鈥?DAC Code Fault

鈾?/div>

Latching Off Overvoltage Protection

鈾?/div>

Programmable Latching Overcurrent Protection

鈾?/div>

Undervoltage Lockout

鈾?/div>

External Enable Control

鈾?/div>

Three鈭扴tate MOSFET Driver Control through Driver鈭扥n Signal

鈥?/div>

System Power Management

鈾?/div>

6鈭払it DAC with 0.5% Tolerance Compatible with VR(M)10.x

Specification

鈾?/div>

Programmable Lower Power Good Threshold

鈾?/div>

Power Good Output

LQFP鈭?2

FTB SUFFIX

CASE 873A

32

1

NCP5314

AWLYYWW

A

= Assembly Location

WL

= Wafer Lot

YY

= Year

WW

= Work Week

Text orientation may vary.

PIN CONNECTIONS

V

ID1

V

ID0

V

ID5

ENABLE

CS2N

CS2P

CS1N

CS1P

V

ID2

V

ID3

V

ID4

PWRLS

V

FFB

SS

PWRGD

DRVON

32 31 30 29 28 27 26 25

24

1

23

2

22

3

21

4

20

5

19

6

18

7

17

8

9 10 11 12 13 14 15 16

SGND

V

DRP

V

FB

COMP

CS4N

CS4P

CS3N

CS3P

I

LIM

R

OSC

V

CC

GATE1

GATE2

GATE3

GATE4

GND

ORDERING INFORMATION

Device

NCP5314MNR2

NCP5314FTR2

Package

32 Pin QFN

LQFP鈭?2

Shipping

鈥?/div>

2000 Tape & Reel

鈥燜or information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

漏

Semiconductor Components Industries, LLC, 2004

1

September, 2004 鈭?Rev. 9

Publication Order Number

NCP5314/D

型号

版本

描述

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