FAN7528M Datasheet

IC型號：
FAN7528M
PDF描述：
Dual Output Critical Conduction Mode PFC Controller
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807.29KB
PDF頁數(shù)：
21頁
芯片廠家：
FAIRCHILD

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FAN7528 Dual Output Critical Conduction Mode PFC Controller

December 2005

FAN7528

Dual Output Critical Conduction Mode PFC Controller

Features

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Low Total Harmonic Distortion (THD)

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Dual Output Voltage Control

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Precise Adjustable Output Over Voltage Protection

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Open-feedback Protection and Disable Function

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Zero Current Detector

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160us Internal Start-up Timer

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MOSFET Over Current Protection

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Under Voltage Lock Out with 3.5V Hysteresis

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Low Start-up (40uA) and Operating Current (1.5mA)

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Totem Pole Output with High State Clamp

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鹵400mA

Peak Gate Drive Current

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8-pin DIP or 8-pin SOP

Description

The FAN7528 is an active power factor correction (PFC) con-

troller for boost PFC applications which operates in the critical

conduction mode (CRM). It uses the voltage mode PWM that

compares an internal ramp signal with the error amplifier output

to generate MOSFET turn-off signal. Because the voltage mode

CRM PFC controller does not need the rectified AC line voltage

information, it can save the power loss of the input voltage sens-

ing network that is necessary for the current mode CRM PFC

controller.

The FAN7528 provides the dual output voltage control function

without the AC line voltage sensing for adapter applications. It

changes the PFC output voltage according to the AC line volt-

age.

It provides many protection functions such as over voltage pro-

tection, open-feedback protection, over current protection and

under voltage lock out protection. The FAN7528 can be dis-

abled if the INV pin voltage is lower than 0.45V and then the

operating current decreases to 65uA. Using a new variable on-

time control method, THD is lower than the conventional CRM

boost PFC ICs.

Applications

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Adapter

Related Application Notes

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AN6012

- Design of Power Factor Correction Circuit Using

FAN7528

Ordering Information

Part Number

FAN7528N

FAN7528M

FAN7528MX

Operating Temp.

Range

-40擄C to +125擄C

Pb-Free

Yes

Package

8-DIP

8-SOP

Packing Method

Rail

Tape & Reel

Marking

Code

FAN7528

漏2005 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FAN7528 Rev. 1.0.1

標準包裝
95
類別
集成電路 (IC)
家庭
PMIC - PFC（功率因數(shù)修正）
系列
-
模式
臨界傳導(dǎo)（CRM），間歇式（轉(zhuǎn)換）
頻率 - 開關(guān)
-
電流 - 啟動
40µA
電源電壓
12 V ~ 23 V
工作溫度
-40°C ~ 125°C
安裝類型
表面貼裝
封裝/外殼
8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝
8-SOP
包裝
管件

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