SC2647

更新时间： 2024-01-08 09:04:27

品牌	Logo	应用领域
商升特 - SEMTECH		多相元件控制器
页数	文件大小	规格书
11页	211K
描述
Multi-Platform Multi-Phase PWM Controller

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SC2647 数据手册

SC2647

Multi-Platform

Multi-Phase PWM Controller

POWER MANAGEMENT

Description

The VID structure of the SC2647 supports VID-on-Fly ap-

plications for any platform. The cycle-by-cycle current

limit plus the intelligent over current shut down provide

the maximum versatility of the system without false

tripping under all possible changes of VID and load

conditions. The differential voltage feedback sense

eliminates the error caused by high load current on the

ground plane. External offset is easy to achieve for any

platforms and the VID settings. The enable function is

also provided to interface with the corresponding sys-

tem signal for correct start up timing and shut down

timing.

The SC2647 provides microprocessor core voltage

regulation solution up to 4 paralleled PWM channels. The

solution can also be configured as 2, 3, or 4-phase form.

Multi-phase buck regulator utilizes the phase-shift tim-

ing control to allow interleaved switching of the power

switches. This architecture minimizes the core voltage

ripple and the input current ripple, which leads to opti-

mized voltage regulator design for power density, tran-

sient responses, and the thermal performances.

To satisfy the highly dynamic nature of the modern

microprocessors, the SC2647 adopts peak current mode

control topology which ensures wide control loop

bandwidth and fast transient responses. The current

mode control provides intrinsic phase current matching.

The maximum ripple frequency is greater than 1MHz.

(Multiple Patents Pending)

Features

VRD/VRM10.0, VRM9.X, and K-8 compliant

Core Voltage Set Point Accuracy 0.5%

Combi-Sense^TMCurrent Mode Control

Intrinsic Phase Current Matching

Fast Transient Responses

One of the outstanding features of the SC2647 is its

voltage regulation accuracy. Not only it provides better

than 0.5% set point accuracy, but also the accuracy to

fully complaint with the stringent load line slope

specifications mandated by the modern microprocessors.

Lossless output current sensing ensures the regulator

output voltage is accurately positioned according to the

load current condition, and an internal temperature

compensation technology further enhances the perfor-

mance of voltage accuracy.

Active Droop with Temperature Compensation to

Meet Load Line Slope

Support VID-on-Fly with 5 or 6 bit VID

Enable Function for Power Sequencing

Cycle-by-Cycle Peak Current Limit

Intelligent Over Current Shut Down

Over Voltage Protection When Using Semtech

Combi-Sense^TMDriver/1211VX

The patented Combi-Sense^TMtopology is employed by

SC2647. The MOSFET R_ds(on)and the output inductor

winding resistance is used to generate the phase cur-

rent information. The SC1211VX Combi-Sense^TMMOSFET

driver plus the SC2647 enables the complete solution.

Under Voltage Protection Built in

External programmable Soft-Start

Externally programmable switching frequency.

2, 3, or 4-Phase Configurations

24-Pin SOIC or TSSOP Packages

This device is fully WEEE and RoHS Compliant

The SC2647 is a multi-platform controller. It conforms

to Intel VRM/VRD10.0, VRM9.X, and AMD K-8 (Opteron^TM)

VID specifications. With very minor changes of the sche-

matic and the layout, the SC2647 based solution can be

ported form one platform to another. This greatly ben-

efits the system manufactures for reductions of design

cycle and minimize the inventory management.

Applications

Voltage Regulator VRD/VRM10.0

Voltage Regulator VRM9.X

Voltage Regulator K-8

High Current, Low Voltage Step Down DC/DC

Converters

July, 12, 2006

www.semtech.com

12 3 4 5 6 7...11

中文翻译

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与SC2647相关器件

型号	品牌	获取价格	描述	数据表
SC2647EVB	SEMTECH	获取价格	Multi-Platform Multi-Phase PWM Controller
SC2647SWTR	SEMTECH	获取价格	Multi-Platform Multi-Phase PWM Controller
SC2647TSTR	SEMTECH	获取价格	Multi-Platform Multi-Phase PWM Controller
SC2647TSTRT	SEMTECH	获取价格	Multi-Platform Multi-Phase PWM Controller
SC2652C2I40	PHILIPS	获取价格	Serial IO/Communication Controller, MOS, CDIP40
SC2655	SEMTECH	获取价格	Programmable Synchronous DC/DC Hysteretic Controller with VRM 9.0 VID Range
SC2655EVB	SEMTECH	获取价格	Programmable Synchronous DC/DC Hysteretic Controller with VRM 9.0 VID Range
SC2655SWTR	SEMTECH	获取价格	Programmable Synchronous DC/DC Hysteretic Controller with VRM 9.0 VID Range
SC2659	SEMTECH	获取价格	Programmable Synchronous DC/DC Hysteretic Controller with VRM 8.5 VID Range
SC2659EVB	SEMTECH	获取价格	Programmable Synchronous DC/DC Hysteretic Controller with VRM 8.5 VID Range

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