Datasheet > AOZ7111

AOZ7111

更新时间： 2024-11-15 12:51:39

品牌	Logo	应用领域
美国万代 - AOS		功率因数校正控制器
页数	文件大小	规格书
15页	912K
描述
Critical Conduction Mode PFC Controller

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AOZ7111 数据手册

AOZ7111

Critical Conduction Mode PFC Controller

General Description

Features

The AOZ7111 is an active power factor correction (PFC)

controller for boost PFC applications that operate in

critical conduction mode (CRM). The device uses a

voltage mode PWM which does not need rectified AC

line voltage information, it saves the power loss of an

input sensing network necessary for traditional current-

mode CRM PFC controller. The AOZ7111 minimizes the

number of external components by integrating safety

features that make it an excellent choice for designing

robust PFC stages.



No AC input voltage sensing requirement

AC Fault Detect™ makes system more robust

Maximum switching frequency limitation

Additional OVP detection pin

Output over-voltage / open-feedback protection and

disable function



Internal closed loop soft-start

Dynamic OVP function

Non-linear gain error amplifier enable fast line and load

transient response

The AOZ7111 is available in a SO-8 package and it is

rated over a -40°C to +125°C ambient temperature

range.



No need for the auxiliary winding with minus current

detection (ZCD)



150µs internal start-up timer

MOSFET over-current protection and inductor

saturation protection



Under-voltage lockout with hysteresis

Lower startup and operating current

+300mA / -800mA peak gate drive current

Thermal shutdown

SO-8 package

Applications



Adapter / ballast

LCD TV / LED TV

SMPS

Typical Application

VOUT

VCC

AOZ7111

Line

OUT

INV

VCC

Filter

COMP

OVP

GND

Figure 1. Typical Boost PFC Application

Rev. 1.0 January 2013

www.aosmd.com

Page 1 of 15

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