Datasheet > SC2646B_1

SC2646B_1

更新时间： 2024-01-15 03:54:44

品牌	Logo	应用领域
商升特 - SEMTECH		控制器
页数	文件大小	规格书
9页	114K
描述
2, 3 or 4 Phase Combi-SenseTM PWM Controller

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

SC2646B_1 数据手册

SC2646B

2, 3 or 4 Phase

Combi-Sense^TMPWM Controller

POWER MANAGEMENT

Features

Description

! VRD/VRM10.X compliant

The SC2646B controller provides a microprocessor core

voltage regulation solution for up to 4 paralleled PWM

channels. The solution can be configured in 2, 3, or 4-

phase form. This multi-phase buck regulator utilizes

phase-shift timing control to allow interleaved switching of

the power switches. The product’s architecture minimizes

the core voltage ripple and the input current ripple, which

leads to optimized voltage regulator design for power den-

sity, transient responses, and thermal performances.

! Core Voltage Set Point Accuracy 0.5%

! Combi-Sense^TMCurrent Mode Control

! Intrinsic Phase Current Matching

! Fast Transient Responses

! Active Droop to Meet Load Line Slope

! 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 SC1211

! Under Voltage Protection Built in

! Externally Programmable Soft-Start

! Externally Programmable Switching Frequency

! 2, 3, or 4-Phase Configurations

! 24-Pin TSSOP Package

To satisfy the highly dynamic nature of the modern micro-

processors, the SC2646B adopts peak current mode con-

trol 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 2MHz.

One of the outstanding features of the SC2646B device is

its voltage regulation accuracy. Not only does it provide

0.5% set point accuracy, but also the accuracy to be fully

compliant with stringent load line slope specifications man-

dated by the modern microprocessors. Lossless output

current sensing ensures the regulator output voltage is

Combi-Sense^TMis a Trademark of Semtech Corporation

Applications

accurately positioned according to the load current condi- ! Voltage Regulator VRD/VRM10.X

tion.

! Voltage Regulation Modules

! High Current, Low Voltage Step Down DC/DC

Converters

Semtech’s patented Combi-Sense^TMtopology is employed

by SC2646B controller. The MOSFET R_ds(on)and the output

inductor winding resistance is used to generate the phase

current information. Semtech’s SC1211 Combi-Sense^TM

MOSFET driver works with the SC2646B to enable a com-

plete solution.

The cycle-by-cycle current limit plus the intelligent over cur-

rent shut down provide the maximum versatility of the sys-

tem without false tripping under all possible changes of

VID and load conditions. The differential voltage feed-

back sense eliminates the error caused by high load cur-

rent on the ground plane. External offset is easy to achieve

for the VID settings. The enable function is also provided

to interface with the corresponding system signal for cor-

rect start up timing and shut down timing.

Revision: Sept. 12, 2005

www.semtech.com

12 3 4 5 6 7...9

中文翻译

下载PDF

与SC2646B_1相关器件

型号	品牌	获取价格	描述	数据表
SC2646BEVB	SEMTECH	获取价格	2, 3 or 4 Phase Combi-Sense PWM Controller
SC2646BTSTRT	SEMTECH	获取价格	2, 3 or 4 Phase Combi-Sense PWM Controller
SC2647	SEMTECH	获取价格	Multi-Platform Multi-Phase PWM Controller
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

与SC2646B_1相关文章

Pickering新高压舌簧继电器亮相汽车测试博览会
2024-08-26

11
采用MCU+MPU双处理器架构实现的创新应用设计探索
2024-08-23

26
解读L9904TR手册资料：产品概述、主要功能、电气参数
2024-08-20

29
芯片底部填充工艺：提升电子设备可靠性的关键步骤
2024-08-14

90

产品中心

服务支持

精选活动

关于我们

帮助中心

SC2646B_1

SC2646B_1 数据手册

与SC2646B_1相关器件

与SC2646B_1相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

SC2646B_1

SC2646B_1 数据手册

与SC2646B_1相关器件

与SC2646B_1相关文章

您还可以找

您在本页遇到什么问题？