Datasheet > SC2422

SC2422

更新时间： 2024-10-01 00:00:43

品牌	Logo	应用领域
商升特 - SEMTECH		控制器
页数	文件大小	规格书
10页	117K
描述
BIPHASE CURRENT MODE CONTROLLER

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中文翻译

获取价格

数据手册

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SC2422 数据手册

BIPHASE CURRENT MODE

CONTROLLER

SC2422A

PRELIMINARY - August 7, 2000

TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com

DESCRIPTION

FEATURES

The SC2422A biphase, current mode controller is de-

signed to work with Semtech smart synchronous

drivers, such as the SC1205, SC1305 or the SC1405 to

provide the DC/DC converter solution for the most

demanding Micro-processor applications. Input current

rather than output current sensing is used to guarantee

precision phase to phase current matching using a

single sense resistor on the input power line. Accurate

current sharing and pulse by pulse current limit are

implemented without the power loss and transient re-

sponse degradation associated with output current

sense methods. Two phase operation allows significant

reduction in input/output ripple while enhancing tran-

sient response.

•

Precision, pulse by pulse phase current match-

ing

•

Active drooping allows for best transient response

Input Sensing Current mode control

Programmable DAC step size/offset allows

Compliance with VRM9.0, VRM8.3 or VRM8.4

Externally programmable soft-start

5V or 12V input for next generation processors

0% minimum duty cycle improves transient re-

sponse

Externally Programmable UVLO with hysteresis

Cycle by cycle current limiting

Programmable Internal Oscillator to 1 MHz

VID IIIII Inhibit (No CPU)

•

The DAC step size and range are programmable with

external components thus allowing compliance with

new and emerging VID ranges.

APPLICATIONS

•

Intel Advanced Microprocessors

AMD Athlon^TMpower supplies

A novel approach implements active droop, minimizing

output capacitor requirements during load transients.

This avoids the pitfalls of the passive droop implemen-

tation. This feature also allows easy implementation of

N+1 redundancy and current sharing among modules.

Servers/Workstations, high density power supplies

ORDERING INFORMATION

DEVICE⁽¹⁾

SC2422ACS.TR

SC2422A.EVB

PACKAGE

TEMP. RANGE (T_J)

Programmable Under Voltage Lockout assures proper

start-up and shutdown by synchronizing the controller

to the driver supply. Wide PWM frequency range allows

use of low profile, surface mount components.

SO-16

0 - 125°C

Evaluation Board

Note:

(1) Only available in tape and reel packaging. A reel con-

tains 1000 devices.

TYPICAL APPLICATION SCHEMATIC

INPUT

Rsens

VIN

DRVH

PHASE

DRVL

VID4

VID3

VID2

VID1

VID0

ERROUT

VCC

BGOUT

OC+

VCC

VDD

SC1305

OUT1

OUT2

OC-

VIN

DRVH

PHASE

DRVL

UVLO

GND

VCC

VDD

RREF

Rref

SC2422A

SC1305

Vout

652 MITCHELL ROAD NEWBURY PARK CA 91320

12 3 4 5 6 7...10

中文翻译

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与SC2422相关器件

型号	品牌	获取价格	描述	数据表
SC2422A	SEMTECH	获取价格	BIPHASE CURRENT MODE CONTROLLER
SC2422ACS.TR	SEMTECH	获取价格	Switching Controller, Current-mode, 1000kHz Switching Freq-Max, PDSO16, SOIC-16
SC2422ACS.TRT	SEMTECH	获取价格	Switching Controller, Current-mode, 1000kHz Switching Freq-Max, PDSO16, SOIC-16
SC2422ACSTR	SEMTECH	获取价格	BIPHASE CURRENT MODE CONTROLLER
SC2422AEVB	SEMTECH	获取价格	BIPHASE CURRENT MODE CONTROLLER
SC2422BCSTR	SEMTECH	获取价格	Switching Controller, Current-mode, 1000kHz Switching Freq-Max, PDSO16, SO-16
SC2430	GAMEWELL-FCI	获取价格	SC Strobes and PC Horn/Strobes
SC2430	SYSTEMSENSOR	获取价格	Strobes and Horn Strobes
SC2430W	SYSTEMSENSOR	获取价格	Strobes and Horn Strobes
SC2430W	GAMEWELL-FCI	获取价格	SC Strobes and PC Horn/Strobes

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