Datasheet > APW7055BNC-TU

APW7055BNC-TU

更新时间： 2024-09-15 04:32:55

品牌	Logo	应用领域
茂达 - ANPEC		控制器
页数	文件大小	规格书
11页	128K
描述
Advanced PWM and Linear Power Controller

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中文翻译

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数据手册

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APW7055BNC-TU 数据手册

APW7055

Advanced PWM and Linear Power Controller

Features

General Description

The APW7055 provides the power control and protec-

tions for two output voltages on M/B DDR applications.

It integrates one PWM controller , one source-sink

linear controller(LC) for DDR source-sink purpose, as

well as the monitor and protection functions into a

single package. The PWM controller supplies the

VMEM(2.5V) with a standard buck converter. The

source-sink linear controller regulates VTT(1.25V)

power for DDR Termination.

•

Operates from 5V input supply

2 Regulated Voltage are provided

− Standard Buck Switching Power for VMEM

(2.5V)

− Linear Controller with Source-Sink Regula

tion for VTT(1.25V)

•

Simple Single-Loop Control Design

− Voltage-Mode PWM Control

Excellent Output Voltage Regulation

− VMEM Output : V_MEM±1.5% Over Tem-per

ature

Additional built-in over-voltage protection (OVP) will

be started when the VMEM output is above 115% of

the internal DAC setting(V_DAC) . OVP function will shut-

down the upper MOSFET and disable all output volt-

age . The PWM controller’s over-current function moni-

tors the output current by sensing the voltage drop

across the upper MOSFET‘s r_DS(ON), eliminating the

need for a current sensing resistor .

− VTT Output : 1/2 VIN ±25mV Over Tempera-

ture

•

Fast Transient Response

− Built-in Feedback Compensation

− Full 0% to 100% Duty Ratio

Over-Voltage and Over-Current Fault Monitors

Constant Frequency Operation(200kHz)

16 pins, SSOP Package

•

Pin Description

VCC

BOOT

UGATE

PHASE

PGND

MEM1

MEM0

OCSET

VSEN

Applications

SOURCE

SINK

•

M/B DDR Power Regulation

AGP/PCI Graphics Power Regulation

SSTL-2 Termination

VIN

GND

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.

ANPEC Electronics Corp.

www.anpec.com.tw

Rev.A.1 - Dec., 2001

12 3 4 5 6 7...11

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