Datasheet > 电源电路 > 开关式稳压器或控制器> SC2655EVB

SC2655EVB

更新时间： 2024-09-10 04:05:27

品牌	Logo	应用领域
商升特 - SEMTECH		控制器
页数	文件大小	规格书
20页	338K
描述
Programmable Synchronous DC/DC Hysteretic Controller with VRM 9.0 VID Range

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SC2655EVB 数据手册

SC2655

Programmable Synchronous DC/DC

Hysteretic Controller with VRM 9.0 VID Range

POWER MANAGEMENT

Features

Description

The SC2655 is a synchronous-buck switch-mode con-

troller designed for use in single ended power supply ap-

plications where efficiency is the primary concern. The

controller is a hysteretic type, with a user selectable hys-

teresis. The SC2655 is ideal for implementing DC/DC

converters needed to power advanced microprocessors

such as Pentium^®llI and Athlon^®, in both single and mul-

tiple processor configurations. Inhibit, under-voltage lock-

out and soft-start functions are included for controlled

power-up.

Programmable hysteresis

5 bit DAC programmable output (1.1V-1.85V)

On-chip power good and OVP functions

Designed to meet latest Intel specifications

Up to 95% efficiency

VIDs pulled up to +3.3V

Applications

Server Systems and Workstations

Pentium^®III Core Supplies

SC2655 features include an integrated 5 bit D/A con-

verter, temperature compensated voltage reference,

current limit comparator, over-current protection, and an

adaptive deadtime circuit to prevent shoot-through of

the power MOSFET during switching transitions. Power

good signaling, logic compatible shutdown, and over-volt-

age protection are also provided. The integrated D/A

converter provides programmability of output voltage

from 1.1V to 1.85V in 25mV increments.

AMD Athlon^®Core Supplies

Multiple Microprocessor Supplies

Voltage Regulator Modules

The SC2655 high side driver can be configured as either

a ground-referenced or as a floating bootstrap driver.

The high and low side MOSFET drivers have a peak cur-

rent rating of 2 amps.

Typical Application Circuit

+5V

R10

10k

SC2655

PWRGD

IOUT

PWRGD

VID0

"POWER GOOD"

0.1

DROOP

OCP

INHIB

VID1

"INHIBIT"

0.1

R11

VHYST

VREFB

VSENSE

AGND

SOFTST

N/C

VID2

VID3

0.5uH

0.1

20k

VID4

0.001

Cin

Bulk

Vin +5V/12V

INHIBIT

IOUTLO

LOSENSE

HISENSE

BOOTLO

HIGHDR

BOOT

0.033

0.1

+5V

LODRV

LOHIB

DRVGND

LOWDR

DRV

0.01

FDB6035AL

R12

1.0

1.0uH

1.0

+12V

VIN12V

FDB7030BL

R14

1.6

Cout

Bulk

Cout

1.10 to 1.825V

C10

10k

*) for the values see specific application circuit somewhere else in the datasheet

Revision: December 10, 2003

www.semtech.com

12 3 4 5 6 7...20

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与SC2655EVB相关器件

型号	品牌	获取价格	描述	数据表
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
SC2659SWTR	SEMTECH	获取价格	Programmable Synchronous DC/DC Hysteretic Controller with VRM 8.5 VID Range
SC265B	ETC	获取价格	TRIAC\|200V V(DRM)\|40A I(T)RMS\|TO-208VAR1/4
SC265B1	ETC	获取价格	TRIAC\|200V V(DRM)\|40A I(T)RMS\|TO-208AA
SC265B2	ETC	获取价格	TRIAC\|200V V(DRM)\|40A I(T)RMS\|IST-3RT-1/4
SC265B3	ETC	获取价格	TRIAC\|200V V(DRM)\|40A I(T)RMS\|IST-3RT-1/4
SC265B4	ETC	获取价格	TRIAC\|200V V(DRM)\|40A I(T)RMS\|IST-3RT-1/2
SC265B5	ETC	获取价格	TRIAC\|200V V(DRM)\|40A I(T)RMS\|IST-3RT-1/2

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