Datasheet > L6917D

L6917D

更新时间： 2024-11-08 23:44:03

品牌	Logo	应用领域
其他 - ETC		模拟IC
页数	文件大小	规格书
27页	412K
描述
Analog IC

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中文翻译

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数据手册

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L6917D 数据手册

L6917

5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER

■

2 PHASE OPERATION WITH

SYNCRHONOUS RECTIFIER CONTROL

■ ULTRA FAST LOAD TRANSIENT RESPONSE

■

INTEGRATED HIGH CURRENT GATE

DRIVERS: UP TO 2A GATE CURRENT

SO-28

■

TTL-COMPATIBLE 5 BIT PROGRAMMABLE

ORDERING NUMBERS: L6917D

OUTPUT COMPLIANT WITH VRM 9.0

L6917DTR (Tape & Reel)

■

0.8% INTERNAL REFERENCE ACCURACY

■

10% ACTIVE CURRENT SHARING

ACCURACY

DESCRIPTION

The device is a power supply controller specifically

designed to provide a high performance DC/DC con-

version for high current microprocessors.

The device implements a dual-phase step-down con-

troller with a 180° phase-shift between each phase.

■ DIGITAL 2048 STEP SOFT-START

■

OVERVOLTAGE PROTECTION

■

OVERCURRENT PROTECTION REALIZED

USING THE LOWER MOSFET’S R

OR A

dsON

SENSE RESISTOR

A precise 5-bit digital to analog converter (DAC) al-

lows adjusting the output voltage from 1.100V to

1.850V with 25mV binary steps.

■

300 kHz INTERNAL OSCILLATOR

OSCILLATOR EXTERNALLY ADJUSTABLE

UP TO 1MHz

■ POWER GOOD OUTPUT AND INHIBIT

The high precision internal reference assures the se-

lected output voltage to be within ±0.8%. The high

peak current gate drive affords to have fast switching

to the external power mos providing low switching

losses.

FUNCTION

■

REMOTE SENSE BUFFER

■ PACKAGE: SO-28

APPLICATIONS

■ POWER SUPPLY FOR SERVER AND

The device assures a fast protection against load

over current and load over/under voltage. An internal

crowbar is provided turning on the low side mosfet if

an over-voltage is detected. In case of over-current

or under voltage, the system works in HICCUP mode.

WORKSTATION

■

POWER SUPPLY FOR HIGH CURRENT

MICROPROCESSORS

■

DISTRIBUTED POWER SUPPLY

BLOCK DIAGRAM

ROSC /INH

SG ND

VCCDR

BOOT1

PGO OD

UGATE1

PHASE1

PHASE

OSCILLATOR

PWM1

CH 1 OVER

CU RR ENT

LGATE1

ISEN1

DIGITAL

SO FT STA RT

VCC

VCCDR

CURRENT

READING

LO GIC

AND

PROTECTIONS

PGNDS1

PGND

TOTAL

CURR ENT

VID4

VID3

AVG

CU RRENT

PGNDS2

CURRENT

READING

VID2

VID1

< >

DAC

CH 2 OVER

CURR ENT

ISEN2

VID0

CH1 OVER

CU RR ENT

LGATE2

CU RR ENT

2 OVER

10k

IFB

FBG

FBR

PHASE2

UGATE2

BOOT2

PWM2

ERROR

AMPLIFIER

REMOTE

BUFFER

10k

Vcc

VSEN

COMP

Vc c

October 2001

1/27

12 3 4 5 6 7...27

中文翻译

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与L6917D相关器件

型号	品牌	获取价格	描述	数据表
L6917DTR	ETC	获取价格	Analog IC
L6918	STMICROELECTRONICS	获取价格	5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER
L6918A	STMICROELECTRONICS	获取价格	5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER
L6918AD	STMICROELECTRONICS	获取价格	5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER
L6918ADTR	STMICROELECTRONICS	获取价格	5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER
L6918D	STMICROELECTRONICS	获取价格	5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER
L6918DTR	STMICROELECTRONICS	获取价格	5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER
L6919	ETC	获取价格	5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT
L6919C	STMICROELECTRONICS	获取价格	5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT
L6919CD	STMICROELECTRONICS	获取价格	5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT

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