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NCP5395G: 产品描述On Board Gate Drivers for CPU Applications; 文件大小253KB，共25页; 制造商ON Semiconductor(安森美); 官网地址http://www.onsemi.cn

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NCP5395G概述

On Board Gate Drivers for CPU Applications

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NCP5395G

2/3/4-Phase Controller with

On Board Gate Drivers for

CPU Applications

The NCP5395G provides up to a four−phase buck solution which

combines differential voltage sensing, differential phase current

sensing, and adaptive voltage positioning to provide accurately

regulated power for both Intel and AMD processors. It also receives

power saving command (PSI) from CPU, and operates in a single

phase emulation diode mode to obtain a high efficiency at light load.

Dual−edge pulse−width modulation (PWM) combined with precise

inductor current sensing provides the fastest initial response to

dynamic load events both in power saving and normal modes.

Dual−edge multiphase modulation reduces the total bulk and ceramic

output capacitance required therefore reducing the system cost to meet

transient regulation specifications.

The on board gate drivers includes adaptive non overlap and power

saving operation. A high performance operational error amplifier is

provided to simplify compensation of the system. Patented Dynamic

Reference Injection further simplifies loop compensation by

eliminating the need to compromise between closed−loop transient

response and Dynamic V

performance.

Features

http://onsemi.com

QFN48, 7x7

CASE 485AJ

1 48

MARKING DIAGRAM

NCP5395G

AWLYYWWG

•

Meets Intel’s VR11.1 and AMD’s 6 Bit Code Specifications

Enhanced Power Saving Function

•

Internal Soft Start

Dual−edge PWM for Fastest Initial Response to Transient Loading

High Performance Operational Error Amplifier

Dynamic Reference Injection (Patent #US07057381)

DAC Range from 0.5 V to 1.6 V

DAC Feed Forward Function (Patient Pending)

±0.5%

DAC Voltage Accuracy from 1.0 V to 1.6 V

True Differential Remote Voltage Sensing Amplifier

Phase−to−Phase Current Balancing

“Lossless” Differential Inductor Current Sensing

Accurate Current Monitoring (IMON)

Differential Current Sense Amplifiers for Each Phase

Adaptive Voltage Positioning (AVP)

Oscillator Frequency Range of 125 kHz

−

1 MHz

Latched Over Voltage Protection (OVP)

Guaranteed Startup into Pre−Charged Loads

Threshold Sensitive Enable Pin for VTT Sensing

Power Good Output with Internal Delays

Output Disable Control Turn Off of Both Phase Pair MOSFETs

Thermally Compensated Current Monitoring

Adaptive−Non−Overlap Gate Drive Circuit

Thermal Shutdown Protection

•

This is a Pb−Free Device

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

VBST3

TG3

SWN3

DRVON

BST2

TG2

SWN2

BG2

VCCP

SWN1

TG1

BST1

AGND

Down−bonded to

Exposed Flag

BG1

VRRDY

CS1N

CS1P

CS2N

CS2P

CS3N

CS3P

CS4N

CS4P

IMON

VSP

VSN

DIFFOUT

COMP

VFB

VDRP

VDFB

CSSUM

DAC

12VMON

VCC

Package

QFN48

(Pb−Free)

Shipping

†

2500/Tape & Reel

Publication Order Number:

NCP5395G/D

BG3

PSI

VID0

VID1

VID2

VID3

VID4

VID5

VID6

VID7/AMD

ROSC

ILIM

ORDERING INFORMATION

Device

NCP5395GMNR2G

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specifications

Brochure, BRD8011/D.

Applications

•

Graphic Cards, Desktop Processors

Semiconductor Components Industries, LLC, 2012

February, 2012

−

Rev. 2

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