Datasheet > L6566A_08

L6566A_08

更新时间： 2024-11-26 03:49:55

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		功率因数校正控制器
页数	文件大小	规格书
51页	544K
描述
Multi-mode controller for SMPS with PFC front-end

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中文翻译

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数据手册

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L6566A_08 数据手册

L6566A

Multi-mode controller for SMPS with PFC front-end

Features

■ Selectable multi-mode operation:

fixed frequency or quasi-resonant

■ On-board 700 V high-voltage start-up

■ Advanced light load management

■ Low quiescent current (< 3 mA)

■ Adaptive UVLO

SO16N

■ Line feedforward for constant power capability

vs mains voltage

Applications

■ Pulse-by-pulse OCP, shutdown on overload

(latched or autorestart)

■ Notebook, TV and LCD monitors adapters

■ High power chargers

■ Transformer saturation detection

■ Switched supply rail for PFC controller

■ Latched or autorestart OVP

■ Brownout protection

■ PDP/LCD TV

■ Consumer appliances, like DVD, VCR, set-top

box

■ IT equipment, games, aux. power supplies

■ Power supplies in excess of 150 W

■ -600/+800 mA totem pole gate driver with

active pull-down during UVLO

■ SO16N package

Figure 1.

Block diagram

VREF

COMP

VFF

V^CC

6.4V

TIME

OUT

OVPL

OVP

SOFT-START

FAULT MNGT

OFF2

LOW CLAMP

& DISABLE

charge

7.7V

LINE VOLTAGE

FEEDFORWARD

Ref erence

voltages

Internal supply

I_HV

VOLTAGE

REGULATOR

LEB

V^CC

UVLO

1.5 V

ADAPTIVE UVLO

Vth

PWM

OCP

V^CC

14V

V^CC

OCP2

400 uA

IC_LATCH

AC_FAIL

Vcc_PFC

Hiccup-mode

OCP logic

UVLO_SHF

5.7V

BURST-MODE

OCP2

OSC

OSCILLATOR

DRIVER

MODE SELECTION

TURN-ON LOGIC

MODE/SC

ZCD

TIME

OUT OVPL

ZERO CURRENT

DETECTOR

50 mV

100 mV

4.5V

OFF2

OVP

OVERVOLTAGE

PROTECTION

LATCH

DIS

IC_LATCH

AC_OK

AC_FAIL

UVLO

DISABLE

15 µA

0.450V

0.485V

3 V

GND

May 2008

Rev 2

1/51

www.st.com

12 3 4 5 6 7...51

中文翻译

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