Datasheet > APW7058

APW7058

更新时间： 2024-11-06 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
13页	174K
描述
Synchronous Buck PWM and Linear Controllers

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APW7058 数据手册

APW7058

Synchronous Buck PWM and Linear Controllers

Features

General Description

•

Provides Two Regulated Voltages

The APW7058 integrates one synchronous-rectified

Buck PWM controller and one linear controller to pro-

vide two regulated voltages for graphics cards and

other embedded processor applications. The PWM

controller which drives dual N-channel MOSFETs uses

fixed 600kHz frequency, voltage-mode PWM control

and integrates power-on-reset(POR), built-in soft-start,

output under-voltage monitoring and shutdown func-

tions into a single chip. The linear controller which

drives a N-channel MOSFET bypass transistor allows

users to optimize the transient response by external

components. The POR circuit with hysteresis moni-

tors both 5VCC and 12VCC supply voltages to start

up/shutdown the IC at power-on/off. An internal 0.8V

temperature-compensated reference is designed to

meet the low output voltage requirement for further

applications. The built-in soft-start function sets the

soft-start interval to prevent the output voltages from

overshoot as well as limiting the input currents. The

under-voltage protections monitor the voltages at FB

and FB2 for short-circuit protection. The under-volt-

age protections cycle the soft-start function until 3

times of UVP events are happened. Pulling and hold-

ing the FB2 pin above 1.28V to disable the both

controllers.

- One Synchronous-Rectified Buck PWM

Controller

- One Linear Controller

•

Low Reference Voltage for Further Applications

- Both Controllers : 0.8V ± 2% Over

Temperature

Both Controllers Drive N-Channel MOSFETs

- PWM Controller Drives Dual N-Channel

MOSFETs

- Linear Controller Drives N-Channel MOSFET

•

Built-in PWM Feedback Compensation

- No Steady-State Error

- Voltage-Mode PWM Control

- Full 0~100% Duty Ratio

- Fast Transient Response

•

Adjustable Outputs by External Resistor Dividers

Under-Voltage Monitoring on Both Controllers

Small Converter Size

- 600kHz Constant Switching Frequency

- Built-In Soft-Start

- Simple SO-8 Package

•

Shutdown Control

Pin Description

Lead Free Available (RoHS Compliant)

Applications

12VCC

UGATE

GND

FB2

•

Motherboard

DRIVE2

5VCC

Graphics Cards

LGATE

12V, 5V and 3.3V Inputs DC-DC Converter

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. A.3 - Mar., 2005

www.anpec.com.tw

12 3 4 5 6 7...13

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与APW7058相关器件

型号	品牌	获取价格	描述	数据表
APW7058KC-TR	ANPEC	获取价格	Synchronous Buck PWM and Linear Controllers
APW7058KC-TRL	ANPEC	获取价格	Synchronous Buck PWM and Linear Controllers
APW7058KC-TU	ANPEC	获取价格	Synchronous Buck PWM and Linear Controllers
APW7058KC-TUL	ANPEC	获取价格	Synchronous Buck PWM and Linear Controllers
APW7060	ANPEC	获取价格	Dual Controllers - Step Down Synchronous PWM and Linear Controller
APW7060K	ANPEC	获取价格	Dual Controllers - Step Down Synchronous PWM and Linear Controller
APW7060KC-TR	ANPEC	获取价格	Dual Controllers - Step Down Synchronous PWM and Linear Controller
APW7060KC-TU	ANPEC	获取价格	Dual Controllers - Step Down Synchronous PWM and Linear Controller
APW7061	ANPEC	获取价格	Synchronous Buck PWM Controller
APW7061KC-TR	ANPEC	获取价格	Synchronous Buck PWM Controller

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