Datasheet > APW7004KC-TU

APW7004KC-TU

更新时间： 2024-10-01 21:54:51

品牌	Logo	应用领域
茂达 - ANPEC		微处理器控制器
页数	文件大小	规格书
10页	102K
描述
Synchronous-Rectifier PWM Controller for Pentium II Microprocessor

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APW7004KC-TU 数据手册

APW7004

Synchronous-Rectifier PWM Controller for Pentium^TMII Microprocessor

Features

6´ 86^TMis a trademark of Cyrix Corporation

Alpha^TMis a trademark of Digital Equipment

Corporation

•

Simple Single-Loop Control Design-Voltage-

Mode PWM Control

K6^TMis a trademark of Advanced Micro Devices,

Inc.

Fast Transient Response

Pentium^TMis a trademark of Intel Corpora-

tion

• High-Bandwidth Error Amplifier

5-Bit Digital-to-Analog Output Voltage Selec-

tion

PowerPC^TMis a trademark of IBM

• Wide Range from1.3V_DCto 3.5V_DC

• 0.1V Binary Steps from 2.1V_DCto 3.5V_DC

.05V Binary Steps from 1.3V_DCto 2.05 V_DC

VID0-4 Input Pins with Pull High Resistors Built

General Description

The APW7004 provides a complete control and mul-

tiple protection for a DC-DC converter optimized for

high performance microprocessor applications. It is

designed to drive two N-Channel MOSFETs in a syn-

chronous-rectified buck topology. The APW7004 in-

tegrates output voltage control, output voltage

programming, monitoring and protection functions into

a single chip IC.

•

Power-Good Output Voltage Monitor, PGOOD

Pin with an Open Collector Configuration

Over-Voltage and Over-Current Fault Monitors

• Uses MOSFET’s R_DS(ON)as Current Sensing,

The APW7004 includes a 5-bit digital-to-analog con-

verter (DAC) that provides a easily adjustable and

precisely output voltage from 2.1V_DCto 3.5V_DCin 0.

No Extra Element Required

•

Programmable Switching Frequency Setting

1 increments and from 1.3 V_DCto 2.05 V_DCin

05V increments. Any selected output voltage can be

maintained within ±1% accuracy over temperature

and line voltage variations.

• 200kHz Free-Running Oscillator

With a 200kHz free-running triangle-wave oscillator

and a error amplifier featuring a 15MHz unity-gain

bandwidth and 6V/us slew rate inside the chip,

APW7004 can implement a simple, single feedback

loop, voltage-mode control topology with high tran-

sient performance.

The APW7004 also features with multiple protections

against over-current and over-voltage conditions by

inhibiting PWM operation. The APW7004 uses the

R_DS(ON)of the upper MOSFET as the current sensing

element which eliminates the demend for an extra

component. The APW7004 also monitors the output

voltage using a comparator with hysteresis that tracks

the DAC output and issues a Power Good signal once

the output is within ±10%.

Applications

•

Power Supply for Pentium^TM, Pentium Pro^TM,

Pentium ^TMII,PowerPC^TM, K6^TM, 6´86^TMand

Alpha^TMMicroprocessors

•

High-Power 5V to 3.xV (or below) DC-DC Regu-

lators

Low-Voltage Distributed Power Supplies

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise

customers to obtain the latest version of relevant information to verify before placing orders.

Rev. P.4 - Mar., 2001

www.anpec.com.tw

12 3 4 5 6 7...10

中文翻译

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