Datasheet > FA5533

FA5533

更新时间： 2024-09-23 03:36:03

品牌	Logo	应用领域
富士电机 - FUJI		功率因数校正
页数	文件大小	规格书
3页	244K
描述
PFC / PWM Combination

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中文翻译

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数据手册

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FA5533 数据手册

PFC / PWM Combination IC FA5533/34

under development

Features

Block Diagram

•Critical mode Power Factor Correction and PWM

are combined : suitable for smaller power supply

•Internal start-up circuit with 500V rating and low

frequency operation achieves 340mW input

at no load when PFC stops.

COMP

MUL

PFC_ IS

ZCD

LIGHT_ LOAD

ZCD

ERR

PFC_ FB

TIMER

MUL

1shot

OVP

PFC_ OUT

RESTART

UVLO

Overvoltage

detection

OVP

PFC_ REG_ OK

PFC section

LIGHT_ LOAD

UVLO_ AC

LIGHT_ LOAD

VCC

• Small Output Capacitance : Linearly reduced

UVLO_ VCC

UVLO_ AC

START

off

REG_ PFC

REG_ PWM

PFC_ REG_ OK

PWM_ REG_ OK

frequency for light load makes small ripple voltage.

• PFC stops below half load ( only for FA5533 )

•Vcc rating 28V allows no series regulator for

Common section

AC detect

ACD

PWM_ REG

PWM section

Dma

PWM

VCO

OSC

PWM_ OUT

RESTART

UVLO

FOSC

PWM_ FB

CLR

1shot

PWM_ REG_ OK

PWM_ DELAY

VCC

auxiliary winding to clamp Vcc voltage.

•Adjustable Soft Start time

slope

PWM OVP

UVLO_ AC

PWM

VCC

•Auto-Restart Over Load Protection

•Auto-Restart Over-Voltage Protection for Vcc

•Adjustable Start-up sequence for PFC and PWM:

easy Full Load Start-up

LIGHT_ LOAD

RESTART

PWM_ REG

delay

RESTART

UVLO

LIGHT_ LOAD

GND

Overload

PWM_ IS

•Brown-Out below 70Vac and 70Vdc of PFC Output

•16 pins package ( DIP/SO )

Usage : Notebook PC, LCD Monitor,

LCD-TV, Laser Beam Printer etc.

12 3

中文翻译

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